题目内容
| 用递等式计算下面各题. 1.22×30÷0.15= | 0.25×7200×0.4= |
| 3.25÷2.5×1.2= | (40-7.36-0.64)÷0.8= |
(1)1.22×30÷0.15
=36.6÷0.15
=244;
(2)0.25×7200×0.4
=0.25×0.4×7200
=0.1×7200
=720;
(3)3.25÷2.5×1.2
=1.3×1.2
=1.56;
(4)(40-7.36-0.64)÷0.8
=[40-(7.36+0.64)]÷0.8
=32÷0.8
=40.
=36.6÷0.15
=244;
(2)0.25×7200×0.4
=0.25×0.4×7200
=0.1×7200
=720;
(3)3.25÷2.5×1.2
=1.3×1.2
=1.56;
(4)(40-7.36-0.64)÷0.8
=[40-(7.36+0.64)]÷0.8
=32÷0.8
=40.
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