0.9 x 102 + 9 x 102 = 900
True
False
0.9 × 102 = 0.9 x 100= 90 9 × 102 = 9 x 100 = 900
0.9 × 102 + 9 × 102 = 90 + 900 = 990
Find the number from each of the following expanded forms:
(a) 8 × 104 + 6 × 103 + 0 × 102 + 4 × 101 + 5 × 100
(b) 4 × 105 + 5 × 103 + 3 × 102 + 2 × 100
(c) 3 × 104 + 7 × 102 + 5 × 100
(d) 9 × 105 + 2 × 102 + 3 × 101
(7310)2−(2110)2