FIND THE SUM BY SUITABLE REARRANGEMENT WORKSHEET

Problem 1 :

Find the following sums by adding them in the most convenient order:

a) 3 + 6 + 7

b) 19 + 8 + 2

c) 3 + 6 + 7 + 4

d) 21 + 98 + 19

e) 45 + 14 + 26

f) 98 + 57 + 102

g) 107 + 14 + 23

h) 28 + 13 + 12 + 37

Solution

Problem 2 :

Find the sum by suitable rearrangement:

(a) 837 + 208 + 363

(b) 1962 + 453 + 1538 + 647

Solution

Problem 3 :

Study the pattern

1 x 8 + 1 = 9

12 x 8 + 2 = 98

Next step ?

Solution

Problem 4 :

Find the value of the following.

(a) 297 × 17 + 297 × 3

(b) 54279 × 92 + 8 × 54279

(c) 81265 × 169 – 81265 × 69

(d) 3845 × 5 × 782 + 769 × 25 × 218

Solution