**The Target Challenge**

**T****he Main Challenge**

Here’s seven more mental arithmetic questions to try. Can you get all seven correct?

- (11 – 5) – (4 + 1) = ?
- What is 10 more than –4?
- 47 × 4 = ?
- 0.32 ÷ 4 = ?
- 3/4 × 2/3 = ?
- Which one is bigger: 2 cubed or 3 squared?
- You wish to buy two £30 items. Which offer would give you the best deal: (A) 15% off both items, (B) 2nd item is 40% off, (C) get 1/3 off the 2nd item, (D) 25% off 1st item, 10% off 2nd item.

**The 7puzzle Challenge**

The playing board of Buy Soma Online is a 7-by-7 grid containing 49 different numbers, ranging from **2 **up to **84**.

The 1st & 2nd rows contain the following fourteen numbers:

2 8 9 14 15 17 22 28 40 48 55 63 64 72

From the list, find TWO numbers that have a sum of 111.

**The Lagrange Challenge**

*Lagrange’s Four-Square Theorem* states that every positive integer can be made by adding up to four square numbers.

For example, **7** can be made by **2²+1²+1²+1²** (or 4+1+1+1).

There are SEVEN ways of making **108 **when using *Lagrange’s Theorem*. Can you find them all?

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**The Target Challenge**

Can you arrive at **108** by inserting **2**, **3**, **5** and **11** into the gaps on both lines?

- ◯²×◯²+◯–◯ = 108
- ◯×◯²+◯²+◯ = 108

**An****swers **can be found **Buy Discount Phentermine Online**.

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**T****he Main Challenge**

Here’s seven tricky mental teasers to try:

- (18 – 5) – (7 – 17) = ?
- 128 + 294 = ?
- How many seconds are in a quarter-of-an-hour?
- How many degrees are in three-quarters of a circle?
- (16 – 8) × (13 – 8) = ?
- On four consecutive days, you spend £55, £74, £36 and £15. What is the average amount spent per day?
- What is 15% of £8?

**The 7puzzle Challenge**

The playing board of Buy Soma Online is a 7-by-7 grid containing 49 different numbers, ranging from **2 **up to **84**.

The 1st & 2nd rows contain the following fourteen numbers:

2 8 9 14 15 17 22 28 40 48 55 63 64 72

Which two numbers have a difference of 42?

**The Lagrange Challenge**

*Lagrange’s Four-Square Theorem* states that every positive integer can be made by adding up to four square numbers.

For example, **7** can be made by **2²+1²+1²+1²** (or 4+1+1+1).

There are FOUR ways of making **107 **when using *Lagrange’s Theorem*. Can you find them?

**The Mathematically Possible Challenge**

Using **1**, **4** and **9 **once each, with + – × ÷ available, which FOUR numbers is it possible to make from the list below?

5 10 15 20 25 30 35 40 45 50

#*5TimesTable*

**The Target Challenge**

Can you arrive at **107** by inserting **9**, **10**, **11** and **12** into the gaps on both lines?

- ◯×◯+◯–◯ = 107 (2 different ways!)
- ◯×◯+(◯–◯)³ = 107

**An****swers **can be found **Buy Discount Phentermine Online**.

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**T****h****e Main Challenge**

Here are seven more mental arithmetic questions for you to try:

- Which number multiplied by itself gives 196?
- What is 50 + 400 + 5?
- 54 – 45 = ?
- If Jo runs 10 miles in one hour, how much further would she get in an extra 15 minutes running at the same rate?
- (14 – 3) × (7 + 2) = ?
- Which fraction comes next in the list: 1/12, 1/6, 1/4, 1/3, …
- How many days equal 6 weeks?

**The 7puzzle Challenge**

The playing board of Buy Soma Online is a 7-by-7 grid containing 49 different numbers, ranging from **2 **up to **84**.

The 1st & 2nd rows contain the following fourteen numbers:

2 8 9 14 15 17 22 28 40 48 55 63 64 72

List FIVE different numbers that total 100.

**The Lagrange Challenge**

*Lagrange’s Four-Square Theorem* states that every positive integer can be made by adding up to four square numbers.

For example, **7** can be made by **2²+1²+1²+1²** (or 4+1+1+1).

There are SEVEN ways of making **106 **when using *Lagrange’s Theorem*. Can you find them all?

**The Mathematically Possible Challenge**

Using **1**, **4** and **9 **once each, with + – × ÷ available, which FIVE numbers is it possible to make from the list below?

4 8 12 16 20 24 28 32 36 40

#*4TimesTable*

**The Target Challenge**

Can you arrive at **106** by inserting **4**, **5**, **6** and **7** into the gaps on both lines?

- ◯²+◯²+◯²+◯ = 106
- ◯³–(◯+◯)×double◯ = 106

**An****swers **can be found **Buy Discount Phentermine Online**.

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**T****h****e Main Challenge**

How quickly can you correctly answer the following seven questions?

- (17 – 4) + (12 – 9) = ?
- (3 – 2) – (16 – 16) = ?
- What is two-thirds plus three-quarters?
- 109 + 10 = ?
- (3 + 16) + (16 + 9) = ?
- (11 – 5) + (4 + 1) = ?
- What is the perimeter of a 13cm by 13cm square?

**The 7puzzle Challenge**

**2 **up to **84**.

The 2nd & 5th rows contain the following fourteen numbers:

6 7 8 16 17 21 28 48 50 55 63 64 81 84

Which two numbers in the list are cube numbers?

**The Lagrange Challenge**

*Lagrange’s Four-Square Theorem* states that every positive integer can be made by adding up to four square numbers.

For example, **7** can be made by **2²+1²+1²+1²** (or 4+1+1+1).

There are SIX ways of making **105 **when using *Lagrange’s Theorem*. Can you find them?

**The Mathematically Possible Challenge**

Using **1**, **4** and **9 **once each, with + – × ÷ available, which FOUR numbers is it possible to make from the list below?

3 6 9 12 15 18 21 24 27 30

#*3TimesTable*

**The Target Challenge**

Can you arrive at **105** by inserting **5**, **5**, **6** and **10** into the gaps on both lines?

- ◯×(◯+◯)–◯ = 105
- ◯²+◯–◯÷◯ = 105

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**T****h****e Main Challenge**

Here’s another selection of mental arithmetic questions. Can you answer all seven correctly?

- (10 + 10) – (15 – 3) = ?
- What is the sum of 0.83 and 0.89?
- What is 1 × 9?
- If Ben earns £10 every half-hour, how much will he earn in 40 hours?
- If you burn 100 calories by climbing 100 stairs, how many calories would you burn when climbing 50 stairs?
- What is 5,456 – 4,372?
- Twice my age plus 4 more is 72. How old am I?

**The 7puzzle Challenge**

**2 **up to **84**.

The 2nd & 5th rows contain the following fourteen numbers:

6 7 8 16 17 21 28 48 50 55 63 64 81 84

What is the product of the two prime numbers?

**The Lagrange Challenge**

*Lagrange’s Four-Square Theorem* states that every positive integer can be made by adding up to four square numbers.

For example, **7** can be made by **2²+1²+1²+1²** (or 4+1+1+1).

There are just THREE ways of making **104 **when using *Lagrange’s Theorem*. Can you find them?

**The Mathematically Possible Challenge**

Using **5**, **7** and **10 **once each, with + – × ÷ available, which are the only TWO numbers it is NOT possible to make from the list below?

25 35 45 55 65 75 85 95 105 115

#*MultiplesOf5*

**The Target Challenge**

Can you arrive at **104** by inserting **2**, **4**, **12** and **15** into the gaps on both lines?

- (◯–◯)×(◯–◯) = 104
- ◯×(◯+◯)–◯² = 104

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**T****he**** Main Challenge**

Here’s a 7-part challenge to test your basic arithmetic knowledge:

- What is 56 divided by 14?
- (1 + 11) + (20 – 4) = ?
- Find which one of these is a factor of 14. Is it 3, 5, 7 or 10?
- What is the next number? 15, 30, 45, 60, …
- 10,000 × 0.001 = ?
- (2 + 3) – (4 – 9) = ?
- What is the sum of 0.81 and 0.5?

Can you get 7 out of 7 correct?

**The 7puzzle Challenge**

**2 **up to **84**.

The 2nd & 5th rows contain the following fourteen numbers:

6 7 8 16 17 21 28 48 50 55 63 64 81 84

Find THREE sets of three different numbers that have a sum of 100.

**The Lagrange Challenge**

*Lagrange’s Four-Square Theorem* states that every positive integer can be made by adding up to four square numbers.

For example, **7** can be made by **2²+1²+1²+1²** (or 4+1+1+1).

There are FIVE ways of making **103 **when using *Lagrange’s Theorem*. Can you find them?

**The Mathematically Possible Challenge**

Using **5**, **7** and **10 **once each, with + – × ÷ available, which is the ONLY number it is possible to make from the list below?

50 51 52 53 54 55 56 57 58 59

#*NumbersIn50s*

**The Target Challenge**

Can you arrive at **103** by inserting **1**, **2**, **6** and **8** into the gaps on both lines?

- ◯²+◯²+◯²–◯² = 103
- (◯+◯+◯)²–half(◯²) = 103

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**T****he Main Challenge**

Can you place the 16 numbers **0 0 1 1 2 2 3 4 4 5 6 7 7 8 9 9** into the 16 gaps below so all four lines work out arithmetically?

◯ + ◯ = 9 = ◯ + ◯

◯ + ◯ = 7 = ◯ – ◯

◯ + ◯ = 12 = ◯ × ◯

◯ + ◯ = 6 = ◯ ÷ ◯

If you enjoyed this number puzzle, click Buy Diazepam With Debit Card for details of similar challenges.

**The 7puzzle Challenge**

**2 **up to **84**.

The 2nd & 5th rows contain the following fourteen numbers:

6 7 8 16 17 21 28 48 50 55 63 64 81 84

What is the sum of the square numbers?

**The Lagrange Challenge**

*Lagrange’s Four-Square Theorem* states that every positive integer can be made by adding up to four square numbers.

For example, **7** can be made by **2²+1²+1²+1²** (or 4+1+1+1).

There are SEVEN ways of making **102 **when using *Lagrange’s Theorem*. Can you find them all?

**The Mathematically Possible Challenge**

Using **5**, **7** and **10 **once each, with + – × ÷ available, which is the ONLY number it is possible to make from the list below?

40 41 42 43 44 45 46 47 48 49

#*NumbersIn40s*

**The Target Challenge**

Can you arrive at **102** by inserting **3**, **4**, **6** and **10** into the gaps on both lines?

- (◯+◯+◯)×◯ = 102
- ◯²+◯×◯÷◯ = 102

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**T****h****e Main Challenge**

Using each of the numbers **0.5**, **1**, **1.5** and **2** once each, with the four arithmetical operations + – × ÷ available, can you arrive at the target answer of **7**?

For the number puzzle enthusiast, can you find a 2nd way of making **7**?

**The 7puzzle Challenge**

**2 **up to **84**.

The 2nd & 5th rows contain the following fourteen numbers:

6 7 8 16 17 21 28 48 50 55 63 64 81 84

Which THREE numbers, when 19 is added to each of them, become square numbers?

**The Lagrange Challenge**

*Lagrange’s Four-Square Theorem* states that every positive integer can be made by adding up to four square numbers.

For example, **7** can be made by **2²+1²+1²+1²** (or 4+1+1+1).

There are FIVE ways of making **101 **when using *Lagrange’s Theorem*. Can you find them all?

**The Mathematically Possible Challenge**

Using **5**, **7** and **10 **once each, with + – × ÷ available, which TWO numbers it is possible to make from the list below?

1 4 9 16 25 36 49 64 81 100

#*SquareNumbers*

**The Target Challenge**

Can you arrive at **101** by inserting **5**, **8**, **10** and **11** into the gaps on each line?

- ◯×◯–(◯–◯)² = 101
- (◯+◯)×◯+◯ = 101
- ◯×◯+◯+double◯ = 101

**An****swers **can be found **Buy Discount Phentermine Online**.

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**T****h****e Main Challenge**

Starting from **ONE**, what is the 7th whole number, when written in English, that does NOT contain the letter ‘E’?

**The 7puzzle Challenge**

**2 **up to **84**.

The 1st & 3rd rows contain the following fourteen numbers:

2 9 13 14 15 22 25 36 40 42 45 66 72 80

List THREE sets of four different numbers that all have a sum of 200, and THREE sets of three different numbers that all have a sum of 100.

**The Lagrange Challenge**

*Lagrange’s Four-Square Theorem* states that every positive integer can be made by adding up to four square numbers.

For example, **7** can be made by **2²+1²+1²+1²** (or 4+1+1+1).

There are SEVEN ways of making **100 **when using *Lagrange’s Theorem*. Can you find them all?

**The Mathematically Possible Challenge**

Using **5**, **7** and **10 **once each, with + – × ÷ available, which TWO numbers it is possible to make from the list below?

2 3 5 7 11 13 17 19 23 29

#*PrimeNumbers*

**The Target Challenge**

Can you arrive at **100** by inserting **4**, **5**, **8** and **10** into the gaps on each line?

- ◯×◯+◯×◯ = 100
- (◯+◯÷√◯)×◯ = 100
- ◯²×(◯+◯–◯) = 100
- (◯³÷◯)×◯÷◯ = 100
- ◯²×(◯+◯–◯)² = 100
- (◯×◯+◯)×√◯ = 100
- ((◯×◯)÷(◯–◯))² = 100

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**T****h****e Main Challenge**

Read the following ten clues about a particular number:

- it’s less than 100,
- it’s one more than a multiple of 3,
- exactly one of its two digits is prime,
- you get a prime if you reverse its digits,
- it’s not a multiple of 5,
- it’s not a prime number,
- it has exactly four factors,
- it’s not a square number,
- the sum of its digits is prime,
- if you multiply it by 5, the answer is greater than 100.

Can you find the mystery number?

**The 7puzzle Challenge**

**2 **up to **84**.

The 1st & 3rd rows contain the following fourteen numbers:

2 9 13 14 15 22 25 36 40 42 45 66 72 80

How many multiples of 12 are on the list?

**The Lagrange Challenge**

*Lagrange’s Four-Square Theorem* states that every positive integer can be made by adding up to four square numbers.

For example, **7** can be made by **2²+1²+1²+1²** (or 4+1+1+1).

There are SIX ways of making **99 **when using *Lagrange’s Theorem*. Can you find them all?

**The Mathematically Possible Challenge**

Using **5**, **7** and **10 **once each, with + – × ÷ available, which TWO numbers it is possible to make from the list below?

12 24 36 48 60 72 84 96 108 120

#*12TimesTable*

**The Target Challenge**

Can you arrive at **99** by inserting **2**, **3**, **5** and **9** into the gaps on each line?

- (◯×◯+◯)×◯ = 99
- ◯×◯×◯+◯² = 99
- (◯+◯)²+◯–◯² = 99
- ◯²×◯²–◯²÷◯ = 99

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