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计算下面各题456+322+178(780-724)×1560+40×375-75÷5720÷8×919×(100-78)(86+54)÷28973-245-2551800-1800÷15.
题目详情
计算下面各题
456+322+178 | (780-724)×15 | 60+40×3 |
75-75÷5 | 720÷8×9 | 19×(100-78) |
(86+54)÷28 | 973-245-255 | 1800-1800÷15. |
▼优质解答
答案和解析
(1)456+322+178
=456+(322+178)
=456+500
=956;
(2)(780-724)×15
=56×15
=840;
(3)60+40×3
=60+120
=180;
(4)75-75÷5
=75-15;
=60;
(5)720÷8×9
=90×9
=810;
(6)19×(100-78)
=19×22
=418;
(7)(86+54)÷28
=140÷28
=5;
(8)973-245-255
=973-(245+255)
=973-500
=473;
(9)1800-1800÷15
=1800-120
=1680.
=456+(322+178)
=456+500
=956;
(2)(780-724)×15
=56×15
=840;
(3)60+40×3
=60+120
=180;
(4)75-75÷5
=75-15;
=60;
(5)720÷8×9
=90×9
=810;
(6)19×(100-78)
=19×22
=418;
(7)(86+54)÷28
=140÷28
=5;
(8)973-245-255
=973-(245+255)
=973-500
=473;
(9)1800-1800÷15
=1800-120
=1680.
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