计算下面各题,怎样简便就怎样算.48+367+152 4...
计算下面各题,怎样简便就怎样算.48+367+152436-129-171250×49×44800÷8÷644×2557×99+5768×47-47×5872×12537...
计算下面各题,怎样简便就怎样算.48+367+152 436-129-171 250×49×4 4800÷8÷6 44×25 57×99+57 68×47-47×58 72×125 374+122+26+278.
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(1)48+367+152
=(48+152)+367
=200+367
=567;
(2)436-129-171
=436-(129+171)
=436-300
=136;
(3)250×49×4
=(250×4)×49
=1000×49
=49000;
(4)4800÷8÷6
=4800÷(8×6)
=4800÷48
=100;
(5)44×25
=11×(4×25)
=11×100
=1100;
(6)57×99+57
=57×(99+1)
=57×100
=5700;
(7)68×47-47×58
=(68-58)×47
=10×47
=470;
(8)72×125
=9×(8×125)
=9×1000
=9000;
(9)374+122+26+278
=(374+26)+(122+278)
=400+400
=800.
=(48+152)+367
=200+367
=567;
(2)436-129-171
=436-(129+171)
=436-300
=136;
(3)250×49×4
=(250×4)×49
=1000×49
=49000;
(4)4800÷8÷6
=4800÷(8×6)
=4800÷48
=100;
(5)44×25
=11×(4×25)
=11×100
=1100;
(6)57×99+57
=57×(99+1)
=57×100
=5700;
(7)68×47-47×58
=(68-58)×47
=10×47
=470;
(8)72×125
=9×(8×125)
=9×1000
=9000;
(9)374+122+26+278
=(374+26)+(122+278)
=400+400
=800.
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