A Couple of Simple Maths Puzzles

In class today the Year 5 & 6 kids were given a few maths puzzles. Amongst them were these two, the first for a bit of mental dexterity, the second for practising times tables:

3, 3, 3, 3

Given 3, 3, 3, 3 and the +, -, / and x operators, make the numbers 0 to 10 inclusive.

Solution:

3+3-3-3 = 0

(3+3) /(3+3) = 1

3/3 + 3/3 = 2

3×3 – 3 – 3 = 3

(3×3 + 3) / 3 = 4

3 + 3 – 3/3 = 5

3+3+3-3 = 6

3/3 +3 +3 = 7

3×3 – 3/3  = 8

3×3 + 3 -3 = 9

3×3 + 3/3 = 10

Times Tables

Two players, one with ten yellow counters, the other with ten blue.  One sheet of paper with the multiples of 8 written on it up to 80. A 10-faced die. (Any colours, any multiples)

Throw the die, multiply the number thrown by 8 and place a counter on top of the multiple.  If opponent throws same number, they place their counter on top of yours.

After all counters used, add up the number of counters in all the piles with a yellow counter on top, add up all piles with blue on top. Winner has most counters.

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