Question
Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)

(a) 80 - 40 = _____

(b) 77 - 34 = _____

(c) 64 - 29 = _____

(d) 44 - 22 = _____
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Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)

(a) 80 - 40 = _____

(b) 77 - 34 = _____

(c) 64 - 29 = _____

(d) 44 - 22 = _____