DAY 108:

Today’s Challenge

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

  1.  (11 – 5) – (4 + 1) = ?
  2.  What is 10 more than –4?
  3.  47 × 4 = ?
  4.  0.32 ÷ 4 = ?
  5.  3/4 × 2/3 = ?
  6.  Which one is bigger: 2 cubed or 3 squared?
  7.  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 the 7puzzle game is a 7-by-7 grid containing 49 different numbers, ranging from up to 84.

The 1st & 2nd rows of the playing board 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.

Make 108 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

Answers can be found here.

Click Paul Godding for details of online maths tuition. Wherever you are in the world, please get in touch.

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