DAY 357:

The Main Challenge

An 11-step number trail involving all four arithmetical operations.

Start with the number 8, then:

  • multiply by 5
  • 25% of this
  • 5
  • add twenty-two
  • 1/3 of this
  • ×4
  • subtract twenty-four
  • +9
  • divide by 7
  • add three
  • ÷3

What is your final answer?

The 7puzzle Challenge

The playing board of the 7puzzle game is a 7-by-7 grid containing 49 different numbers, ranging from 2 up to 84.

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

2   8   10   11   14   16   18   25   33   44   45   48   70   84

What is the lowest prime number you can make by adding three different numbers from the list?

The Factors Challenge

Which FOUR of the numbers below are factors of 357?

3    5    7    9    11    13    15    17    19    21    23

The Mathematically Possible Challenge

Using 48 and 12 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 357 by inserting 4, 5, 7, 8 and 9 into the gaps below?

  •  (◯++◯)×◯×√◯ = 357

Answers can be found here.

Click Paul Godding for details of online maths tuition.

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