一道小学数学题(关于简便计算)
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发布时间:2024-01-21 23:58
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热心网友
时间:2024-03-15 16:43
(6/7-3/4)÷1/42
=(6/7-3/4)×42
=6/7×42-3/4×42
=36-31.5
=4.5
7/10×3+3/10÷1/3
=7/10×3+3/10×3
=3×(7/10+3/10)
=3×1
=3
5/8×3/7÷3/8×4/7
=5/8×3/7×8/3×4/7
=5/8×8/3×3/7×4/7
分别化简=20/49
3-3/2×10/21-2/7
=3-5/7-2/7
=3-(5/7+2/7)
=3-1
=2
以上几题可用简便方法,计算过程如上。。
热心网友
时间:2024-03-15 16:43
(6/7-3/4)÷1/42
=(6/7-3/4)×42
=6/7×42-3/4×42
=36-31.5
=4.5
7/10×3+3/10÷1/3
=7/10×3+3/10×3
=3×(7/10+3/10)
=3×1
=3
5/8×3/7÷3/8×4/7
=5/8×3/7×8/3×4/7
=5/8×8/3×3/7×4/7
分别化简=20/49
3-3/2×10/21-2/7
=3-5/7-2/7
=3-(5/7+2/7)
=3-1
=2
热心网友
时间:2024-03-15 16:44
(6/7-3/4)÷1/42
=6/7*42-3/4*42
=36-31.5
=4.5
热心网友
时间:2024-03-15 16:44
(6/7-3/4)÷1/42
=6/7*42-3/4*42
=36-31.5
=4.5
热心网友
时间:2024-03-15 16:45
和他一样