# Monthly Archives: April 2021

## DAY/DYDD/PÄIVÄ/NAP 108

The 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 × … Continue reading

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## DAY/DYDD/PÄIVÄ/NAP 107

The 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 … Continue reading

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## DAY/DYDD/PÄIVÄ/NAP 106

The 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 … Continue reading

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## DAY/DYDD/PÄIVÄ/NAP 105

The 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) + … Continue reading

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## DAY/DYDD/PÄIVÄ/NAP 104

The 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 … Continue reading

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## DAY/DYDD/PÄIVÄ/NAP 103

The 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, … Continue reading

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## DAY/DYDD/PÄIVÄ/NAP 102

The 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? ◯  +  ◯   … Continue reading

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## DAY/DYDD/PÄIVÄ/NAP 101

The 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 … Continue reading

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## DAY/DYDD/PÄIVÄ/NAP 100

The 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 The playing board of the 7puzzle game is a 7-by-7 grid containing 49 different numbers, ranging from … Continue reading

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## DAY/DYDD/PÄIVÄ/NAP 99

The 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, … Continue reading

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