a) Tính
24 × (8 – 4) = ………………….
= …………………..
24 × 8 – 24 × 4 = ………………..
= ………………..
(9 – 3) × 8 = ……………………
= ……………………
9 × 8 – 3 × 8 = …………………
= …………………
b) >; <; =?
24 × 8 – 24 × 4 ….. 24 × (8 – 4)
15 × 6 – 15 × 4 ….. 15 × (6 – 3)
9 × 8 – 3 × 8 ….. (9 – 3) × 8
25 × (10 – 5) ….. 25 × 10 – 25 × 5
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