题目内容
简便运算:
32×1.25×2.5
4.4×5.8+5.6×5.8.
32×1.25×2.5
4.4×5.8+5.6×5.8.
(1)32×1.25×2.5,
=(8×1.25)×(2.5×4),
=10×10,
=100;
(2)4.4×5.8+5.6×5.8,
=(4.4+5.6)×5.8,
=10×5.8,
=58.
=(8×1.25)×(2.5×4),
=10×10,
=100;
(2)4.4×5.8+5.6×5.8,
=(4.4+5.6)×5.8,
=10×5.8,
=58.
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