Make 5 examples of addition and …

5 examples for addition are - (a) 11 + 18 = 10 + 20 = 30 (estimated to nearest tens place) (b) 23 + 37 = 20 + 40 = 60 (estimated to nearest tens place) (c) 113 + 129 = 110 + 130 = 240 (estimated to nearest tens place) (d) 2136 + 1375 = 2000 + 1000 = 3000 (estimated to nearest thousands place) (e) 15167 + 23956 = 20000 + 20000 = 40000 (estimated to nearest ten thousand place) 5 examples for subtraction - (a) 18 - 11 = 20 - 10 = 10 (estimated to nearest tens) (b) 37 - 23 = 40 - 20 = 20 (estimated to nearest tens) (c) 129 - 113 = 130 - 110 = 20 (estimated to nearest tens) (d) 2136 - 1375 = 2000 – 1000 = 1000 (estimated to nearest thousands) (e) 23956 – 15167 = 20000 – 20000 = 0 (estimated to nearest ten thousands)

10 and 0