Tính nhẩm :
a) 4,08 × 10 = ........... 0,102 × 10 = ..........
b) 23,013 × 100 = ....... 8,515 × 100 = ........
c) 7,318 × 1000 = ....... 4,57 × 1000 = ........
a) 4,08 × 10 = 40,8 0,102 × 10 = 1,02
b) 23,013 × 100 = 2301,3 8,515 × 100 = 851,5
c) 7,318 × 1000 = 7318 4,57 ×1000 = 4570
-- Mod Toán lớp 5
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