SEAMO 2027 - Paper A - SET 08 - Self-study Question 17

Find the values using the displayed decompositions.
(a) 17 + 18 + 19 = (20 − 3) + (20 − 2) + (20 − 1).
(b) 37 + 38 + 35 = (30 + 7) + (30 + 8) + (30 + 5); split 5 as 3 + 2. Give both results and show the completed steps.