Q 1: Write 3 + 4 in doubles plus one form. 2 + 2 + 3 = 7 4 + 0 + 3 = 7 3 + 3 + 1 = 7 5 + 1 + 1 = 7

Q 2: Write 8 + 9 in doubles plus one form. 8 + 8 + 1 = 17 7 + 7 + 3 = 17 9 + 6 + 2 = 17 6 + 6 + 5 = 17

Q 3: Write 4 + 5 in doubles plus one form. 2 + 2 + 5 = 9 4 + 4 + 1 = 9 6 + 2 + 1 = 9 3 + 5 + 1 = 9

Q 4: Write 5 + 6 in doubles plus one form. 5 + 5 + 1 = 11 7 + 2 + 2 = 11 6 + 3 + 2 = 11 7 + 2 + 2 = 11

Q 5: Write 7 + 8 in doubles plus one form. 8 + 4 + 3 = 15 6 + 7 + 2 = 15 9 + 1 + 5 = 15 7 + 7 + 1 = 15

Q 6: Write 6 + 7 in doubles plus one form. 7 + 4 + 2 = 13 6 + 6 + 1 = 13 8 + 2 + 3 = 13 5 + 5 + 3 = 13

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Question 8: This question is available to subscribers only!

