DAY 175:

Today’s Challenge

Please try this in class if you’re a teacher as I guarantee you will see the children’s number skills grow the more puzzles they attempt. If you’re a puzzle enthusiast, I’m sure you’ll enjoy the challenge too! The rules are very simple:

  • Just like a crossword, fill in the boxes,
  • Each box must contain a number from 1-9 and each run of boxes must add up to the total shown on the left or above,
  • You cannot use the same digits in each run, so if a total of 4 is to be completed in 2 boxes, they must be made up of either 3+1 or 1+3, but not 2+2.

Here is a Kakuro beginner puzzle for you to try:

The 7puzzle Challenge

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

The 3rd & 5th rows contain the following fourteen numbers:

6    7    13    16    21    25    36    42    45    50    66    80    81    84

What is the sum of the multiples of 3 on the list?

Make 175 Challenge

Can you arrive at 175 by inserting 3, 5, 10 and 15 into the gaps below?

(◯+◯)×◯–◯ = 175

Answers can be found here.

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

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