简便计算五年级28.7×3.3+3.3×71.3=94.71+3.3×2.29等于多少?
2021-04-15
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28.7×3.3+3.3×71.3+94.71x3.3+3.3×2.29
=(28.7+71.3)x3.3+(94.71+2.29)x3.3
=100x3.3+97*3.3
=(100+100)*3.3-3*3.3
=660-9.9
=650.1
28.7×3.3+3.3×71.3+94.71x3.3+3.3×2.29
=(28.7+71.3)x3.3+(94.71+2.29)x3.3
=100x3.3+97*3.3
=(100+100)*3.3-3*3.3
=660-9.9
=650.1
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原式=3.3ⅹ(28.7+71.3)
=3.3ⅹ100
=330
94.71+2.29+2.3ⅹ2.29
=97+2x2.29+0.3ⅹ2.29
=97+4.58+0.687
=102.267
=3.3ⅹ100
=330
94.71+2.29+2.3ⅹ2.29
=97+2x2.29+0.3ⅹ2.29
=97+4.58+0.687
=102.267
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28.7×3.3+3.3×71.3
=3.3×(28.7+71.3)
=3.3×100
=330
=3.3×(28.7+71.3)
=3.3×100
=330
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