Here is a number puzzle similar in concept to my latest 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:29–6 C:35–15 D:14+10 A:5×5 H:72÷3 E:7×4 F:16+11
- Section 2
H:15+12 B:34–8 F:9×3 E:48÷2 C:11×2 G:60÷3 A:17+12 D:40–15
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 become prime numbers when 10 is added to them?
. . . can be found when clicking this.