数学脱式计算题100道带答案

5.4÷1.8+240×1.5

=3+360

=363

9000÷72×(1.25×0.7×8)

=9000÷72×7

=125×7

=875

61-(1.25+2.5×0.7)

=61-3

=58

[(10-0.8)+9.85]-2÷0.125

=19.05-2÷0.125

=19.05-16

=3.05

408-12×24

= 408 - 288

= 120

(46+28)×60

= 74 x 60

= 4440

42×50-17

= 2100- 17

= 2083

32+105÷5

= 32 + 21

= 53

420×(327-238)

= 420 x 89

= 37380

(4121+2389)÷7

= 6510 ÷7

= 930。