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


(a) 40 + 30 = _____

(b) 28 + 28 = _____

(c) 22 + 66 = _____

(d) 31 + 31 + 31 = _____
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Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)


(a) 40 + 30 = _____

(b) 28 + 28 = _____

(c) 22 + 66 = _____

(d) 31 + 31 + 31 = _____