DAY 317:

Today’s Challenge

Here is a number puzzle similar in concept to my FlagMath card game. Many schools are now playing the various editions, so here’s a taster:

Each of the eight letters, A-H, in the two sections contain a calculation with an answer in the 20’s:

  • Section 1

B:84÷4   G:296   C:3515   D:14+10   A:5×5   H:72÷3   E:7×4   F:16+11

  • Section 2

H:15+12   B:348   F:9×3   E:48÷2   C:11×2   G:60÷3   A:17+12   D:4015

Which is the only letter that has the SAME answer in BOTH sections?

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 & 2nd columns of the playing board contain the following fourteen numbers:

2    10    13    16    21    22    27    33    45    48    55    56    60    70

How many numbers above become prime numbers when 10 is added to them?

Make 317 Challenge

Can you arrive at 317 by inserting 7, 8, 9, 10 and 11 into the gaps below?

(◯×◯×◯)+(◯×◯) = 317

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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