题目内容
计算下面各题.
| ①(4300-600)÷(20+5×70) | ②190+(16-7)×15 | ③1000+(32+64)×10 |
| ④180-180÷12×5+30 | ⑤54×16+(1141-168÷28) | ⑥(327+18×12)×400. |
①(4300-600)÷(20+5×70)
=3700÷(20+350)
=3700÷370
=10;
⑤54×16+(1141-168÷28)
=864+(1141-6)
=864+1135
=1999;
⑥(327+18×12)×400
=(327+216)×400
=543×400
=217200.
=3700÷(20+350)
=3700÷370
=10;
| ②190+(16-7)×15 =190+9×15 =190+135 =325; ③1000+(32+64)×10 =1000+96×10 =1000+960 =1960 ④180-180÷12×5+30 =180-15×5+30 =180-75+30 =105+30 =135; |
=864+(1141-6)
=864+1135
=1999;
⑥(327+18×12)×400
=(327+216)×400
=543×400
=217200.
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