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用简便方法计算. 316×(49+23)514÷1112×73518×4÷4×18736÷1
问题详情
用简便方法计算.
参考答案
(1)316×(49+23)
=316×49+316×23
=112+18
=524;
(2)514÷1112×735
=514×735×1211
=114×1211
=677;
(3)18×4÷4×18
=18×4×14×18
=(18×18)×(4×14)
=164×1
=164;
(4)736÷1112÷533
=736÷(1112×533)
=736÷536
=75;
(5)57×356
=(56+1)×356
=56×356+1×356
=3+356
=3356;
(6)18+17+78÷75
=18+17+58
=18+58+17
=34+17
=2528;
(7)(24+49)÷4
=(24+49)×14
=24×14+49×14
=6+19
=619;
(8)23-57+13
=23+13-57
=1-57
=27;
(9)425+425×10
=425×1+425×10
=425×(1+10)
=425×11
=4425.
考点:方法