64-44+2的简便方法?
9个回答
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解:(1)5×(63×2)
=5×2×63
=10×63
=630;
(2)47+236+64
=47+(236+64)
=47+300
=347;
(3)25×44
=25×4×11
=100×11
=1100;
(4)70×(56-27)
=70×29
=2030;
(5)300-162÷18
=300-9
=291;
(6)(432+168)÷30
=600÷30
=20.
=5×2×63
=10×63
=630;
(2)47+236+64
=47+(236+64)
=47+300
=347;
(3)25×44
=25×4×11
=100×11
=1100;
(4)70×(56-27)
=70×29
=2030;
(5)300-162÷18
=300-9
=291;
(6)(432+168)÷30
=600÷30
=20.
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展开全部
解:(1)5×(63×2)
=5×2×63
=10×63
=630;
(2)47+236+64
=47+(236+64)
=47+300
=347;
(3)25×44
=25×4×11
=100×11
=1100;
(4)70×(56-27)
=70×29
=2030;
(5)300-162÷18
=300-9
=291;
(6)(432+168)÷30
=600÷30
=20.
=5×2×63
=10×63
=630;
(2)47+236+64
=47+(236+64)
=47+300
=347;
(3)25×44
=25×4×11
=100×11
=1100;
(4)70×(56-27)
=70×29
=2030;
(5)300-162÷18
=300-9
=291;
(6)(432+168)÷30
=600÷30
=20.
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你对这个回答的评价是?
展开全部
解:(1)5×(63×2)
=5×2×63
=10×63
=630;
(2)47+236+64
=47+(236+64)
=47+300
=347;
(3)25×44
=25×4×11
=100×11
=1100;
(4)70×(56-27)
=70×29
=2030;
(5)300-162÷18
=300-9
=291;
(6)(432+168)÷30
=600÷30
=20.
=5×2×63
=10×63
=630;
(2)47+236+64
=47+(236+64)
=47+300
=347;
(3)25×44
=25×4×11
=100×11
=1100;
(4)70×(56-27)
=70×29
=2030;
(5)300-162÷18
=300-9
=291;
(6)(432+168)÷30
=600÷30
=20.
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评论
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你对这个回答的评价是?
展开全部
解:(1)5×(63×2)
=5×2×63
=10×63
=630;
(2)47+236+64
=47+(236+64)
=47+300
=347;
(3)25×44
=25×4×11
=100×11
=1100;
(4)70×(56-27)
=70×29
=2030;
(5)300-162÷18
=300-9
=291;
(6)(432+168)÷30
=600÷30
=20.
=5×2×63
=10×63
=630;
(2)47+236+64
=47+(236+64)
=47+300
=347;
(3)25×44
=25×4×11
=100×11
=1100;
(4)70×(56-27)
=70×29
=2030;
(5)300-162÷18
=300-9
=291;
(6)(432+168)÷30
=600÷30
=20.
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评论
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