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
Problem 2 :
Find the sum by suitable rearrangement:
(a) 837 + 208 + 363
(b) 1962 + 453 + 1538 + 647
Problem 3 :
Study the pattern
1 x 8 + 1 = 9
12 x 8 + 2 = 98
Next step ?
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
1) a) 16 b) 29 c) 20 d) 138 e) 85 f) 257
g) 153 h) 90
2) i) 1408 ii) 4600
3) 987
4) a) 8910 b) 5427900 c) 8126500 d) 19225000
May 21, 24 08:51 PM
May 21, 24 08:51 AM
May 20, 24 10:45 PM