题目内容
| 口算. 4.5+0.45= | 3.8-0.38= | 0.4÷0.004= | 0.15×0.04= | ||||||||||||||||
|
| 7.7×
| 1000×
|
(1)4.5+0.45=4.95;
(2)3.8-0.38=3.42;
(3)0.4÷0.004=100;
(4)0.15×0.04=0.006;
(5)
+
+
,
=(
+
)+
,
=1+
,
=1
;
(6)
×
÷
,
=
×
×
,
=
;
(7)7.7×
-2.9,
=4.4-2.9,
=1.5;
(8)1000×
=125.
(2)3.8-0.38=3.42;
(3)0.4÷0.004=100;
(4)0.15×0.04=0.006;
(5)
| 4 |
| 7 |
| 4 |
| 9 |
| 3 |
| 7 |
=(
| 4 |
| 7 |
| 3 |
| 7 |
| 4 |
| 9 |
=1+
| 4 |
| 9 |
=1
| 4 |
| 9 |
(6)
| 5 |
| 3 |
| 1 |
| 4 |
| 5 |
| 3 |
=
| 5 |
| 3 |
| 1 |
| 4 |
| 3 |
| 5 |
=
| 1 |
| 4 |
(7)7.7×
| 4 |
| 7 |
=4.4-2.9,
=1.5;
(8)1000×
| 1 |
| 8 |
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