DAY 306:

Today’s Challenge

This challenge has been taken from our series of MATHELONA number puzzle pocket books.

Can you complete this task so all three lines work out arithmetically when inserting the digits 0, 0, 1, 1, 1, 2, 3, 4, 5, 6, 7 and 8 into the 12 gaps below?

◯  +  ◯   =     6     =   ◯  –  ◯
◯  +  ◯   =    15    =   ◯  ×  ◯
◯  +  ◯   =     1     =   ◯  ÷  ◯

Further details of our popular challenges can be found by clicking MATHELONA.

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 1st & 3rd rows of the playing board contain the following fourteen numbers:

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

Which two numbers, when each is halved, also appear on the list?

Make 306 Challenge

Can you arrive at 306 by inserting 1, 2, 3, 4 and 5 into the gaps below?

[◯²+(◯+◯–◯)²]×◯² = 306

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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