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脱式计算,能简算的可以简算49×102-2×49125×76×88.33-2.43-4.57103×3236×99+3641000÷8÷125(39+21)×(84÷7)550+230×62÷31(324-285)×12÷26.
题目详情
脱式计算,能简算的可以简算 49×102-2×49 | 125×76×8 |
8.33-2.43-4.57 | 103×32 |
36×99+36 | 41000÷8÷125 |
(39+21)×(84÷7) | 550+230×62÷31 |
(324-285)×12÷26. |
▼优质解答
答案和解析
(1)49×102-2×49
=49×(102-2)
=49×100
=4900;
(2)125×76×8
=125×8×76
=1000×76
=76000;
(3)8.33-2.43-4.57
=8.33-(2.43+4.57)
=8.33-7
=1.33;
(4)103×32
=(100+3)×32
=100×32+3×32
=3200+96
=3296;
(5)36×99+36
=36×(99+1)
=36×100
=3600;
(6)41000÷8÷125
=41000÷(8×125)
=41000÷1000,
=41;
(7)(39+21)×(84÷7)
=60×12
=720;
(8)550+230×62÷31
=550+230×(62÷31)
=550+230×2
=550+460
=1010;
(9)(324-285)×12÷26
=39×12÷26
=468÷26
=18.
=49×(102-2)
=49×100
=4900;
(2)125×76×8
=125×8×76
=1000×76
=76000;
(3)8.33-2.43-4.57
=8.33-(2.43+4.57)
=8.33-7
=1.33;
(4)103×32
=(100+3)×32
=100×32+3×32
=3200+96
=3296;
(5)36×99+36
=36×(99+1)
=36×100
=3600;
(6)41000÷8÷125
=41000÷(8×125)
=41000÷1000,
=41;
(7)(39+21)×(84÷7)
=60×12
=720;
(8)550+230×62÷31
=550+230×(62÷31)
=550+230×2
=550+460
=1010;
(9)(324-285)×12÷26
=39×12÷26
=468÷26
=18.
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