4·08×0·25怎么简算？
2个回答
展开全部
4.08×0.25
=4.08×1/4
=1.02
=4.08×1/4
=1.02
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展开全部
4.08×0.25
=1.02×(4×0.25)
=1.02
12.5×0.4×2.5×8
=(12.5×8)×(0.4×2.5)
=100×1
=100
9.5×101
=9.5×100+9.5×1
=950+9.5
=959.5
4.2×7.8+2.2×4.2
=4.2×(7.8+2.2)
=4.2×10
=42
0.87×3.36+4.64×0.87
=0.87×(3.36+4.64)
=0.87×8
=6.96
=1.02×(4×0.25)
=1.02
12.5×0.4×2.5×8
=(12.5×8)×(0.4×2.5)
=100×1
=100
9.5×101
=9.5×100+9.5×1
=950+9.5
=959.5
4.2×7.8+2.2×4.2
=4.2×(7.8+2.2)
=4.2×10
=42
0.87×3.36+4.64×0.87
=0.87×(3.36+4.64)
=0.87×8
=6.96
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