题目内容
| 用简便方法计算. 41×101 | 10.5÷2.5÷4 | 1.7÷4+2.3×25% |
(1)41×101,
=41×100+41×1,
=4100+41,
=4141;
(2)10.5÷2.5÷4,
=10.5÷(2.5×4),
=10.5÷10,
=1.05;
(3)1.7÷4+2.3×25%,
=1.7×
+2.3×
,
=(1.7+2.3)×
,
=4×
,
=1.
=41×100+41×1,
=4100+41,
=4141;
(2)10.5÷2.5÷4,
=10.5÷(2.5×4),
=10.5÷10,
=1.05;
(3)1.7÷4+2.3×25%,
=1.7×
| 1 |
| 4 |
| 1 |
| 4 |
=(1.7+2.3)×
| 1 |
| 4 |
=4×
| 1 |
| 4 |
=1.
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