3.4x7x1.5的简便方法

2026-02-15 17:08:14

1、方法1:


3.47x1.5
=3.4x(7x1.5)
=3.4x10.5
=3.4x(10+0.5)
=3.4x10+3.4x0.5
=34+1.7
=35.7

2、方法2:


3.4×7×1.5
=(1.7×7)×(2×1.5)
=11.9×3
=35.7

3、方法3:


3.x47x1.5
=(2x1.7)x7x1.5
=2x1.5x1.7x7
=3x1.7x7
=5.1x7
=35.7
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