Tính nhẩm :
a) 4,08 × 10 = ........
21,8 × 10 = ..........
b) 45,81 × 100 = .....
9,475 × 100 = .......
c) 2,6843 × 1000 = .....
0,8341 × 1000 = .......
a) 4,08 × 10 = 40,8
21,8 × 10 = 218
b) 45,81 × 100 = 4581
9,475 × 100 = 947,5
c) 2,6843 × 1000 = 2684,3
0,8341 × 1000 = 834,1
-- Mod Toán lớp 5
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