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


(a) 16 + 13 = _____

(b) 23 + 7 = _____

(c) 19 + 10 = _____

(d) 84 +  20 = _____
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Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)


(a) 16 + 13 = _____

(b) 23 + 7 = _____

(c) 19 + 10 = _____

(d) 84 +  20 = _____