计算,能简算的要简算10÷0.2÷2.514.5×10221.6÷0
计算,能简算的要简算10÷0.2÷2.514.5×10221.6÷0.8-1.2×514.64+3.7×2.81.25×3.22×0.8101×4.5-4.5....
计算,能简算的要简算10÷0.2÷2.514.5×10221.6÷0.8-1.2×514.64+3.7×2.81.25×3.22×0.8101×4.5-4.5.
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(1)10÷0.2÷2.5
=10÷(0.2×2.5)
=10÷0.5
=20;
(2)14.5×102
=14.5×(100+2)
=14.5×100+14.5×2
=1450+29
=1479;
(3)21.6÷0.8-1.2×5
=27-6
=21;
(4)14.64+3.7×2.8
=14.64+10.36
=25;
(5)1.25×3.22×0.8
=1.25×0.8×3.22
=1×3.22
=3.22;
(6)101×4.5-4.5
=4.5×(101-1)
=4.5×100
=450.
=10÷(0.2×2.5)
=10÷0.5
=20;
(2)14.5×102
=14.5×(100+2)
=14.5×100+14.5×2
=1450+29
=1479;
(3)21.6÷0.8-1.2×5
=27-6
=21;
(4)14.64+3.7×2.8
=14.64+10.36
=25;
(5)1.25×3.22×0.8
=1.25×0.8×3.22
=1×3.22
=3.22;
(6)101×4.5-4.5
=4.5×(101-1)
=4.5×100
=450.
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