计算下面各题721÷7×5 100-70÷5 672÷(2×3) (601-24...
计算下面各题721÷7×5100-70÷5672÷(2×3)(601-246)÷5(270-180)×7525÷3÷5859-162+87120÷4-5×334+26×3...
计算下面各题 721÷7×5 100-70÷5 672÷(2×3) (601-246)÷5 (270-180)×7 525÷3÷5 859-162+87 120÷4-5×3 34+26×3.
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解答:解:(1)721÷7×5
=103×5
=515;
(2)100-70÷5
=100-14
=86;
(3)672÷(2×3)
=672÷6
=112;
(4)(601-246)÷5
=355÷5
=71;
(5)(270-180)×7
=90×7
=630;
(6)525÷3÷5
=175÷5
=35;
(7)859-162+87
=697+87
=784;
(8)120÷4-5×3
=30-15
=15;
(4)34+26×3
=34+78
=112.
=103×5
=515;
(2)100-70÷5
=100-14
=86;
(3)672÷(2×3)
=672÷6
=112;
(4)(601-246)÷5
=355÷5
=71;
(5)(270-180)×7
=90×7
=630;
(6)525÷3÷5
=175÷5
=35;
(7)859-162+87
=697+87
=784;
(8)120÷4-5×3
=30-15
=15;
(4)34+26×3
=34+78
=112.
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