计算下面各题(能简算的要简算)25×32×125 23×44+47×23-23 &...
计算下面各题(能简算的要简算)25×32×12523×44+47×23-23(2030-18×35)÷3546×101-4699×386000÷[(172-156)×25...
计算下面各题(能简算的要简算)25×32×125 23×44+47×23-23 (2030-18×35)÷35 46×101-46 99×38 6000÷[(172-156)×25].
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(1)25×32×125
=25×4×(8×125)
=100×1000
=100000;
(2)23×44+47×23-23
=(44+47-1)×23
=90×23
=2070;
(3)(2030-18×35)÷35
=(2030-630)÷35
=1400÷35
=40;
(4)46×101-46
=46×(101-1)
=46×100
=4600;
(5)99×38
=(100-1)×38
=100×38-38
=3800-38
=3762;
(6)6000÷[(172-156)×25]
=6000÷(16×25)
=6000÷400
=15.
=25×4×(8×125)
=100×1000
=100000;
(2)23×44+47×23-23
=(44+47-1)×23
=90×23
=2070;
(3)(2030-18×35)÷35
=(2030-630)÷35
=1400÷35
=40;
(4)46×101-46
=46×(101-1)
=46×100
=4600;
(5)99×38
=(100-1)×38
=100×38-38
=3800-38
=3762;
(6)6000÷[(172-156)×25]
=6000÷(16×25)
=6000÷400
=15.
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