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直接写得数．1.5时：45分=1.5×0.6=15-549=0.9×99+0.9=2÷0.25+1.1=312：213=15-17=2.5×3.5×0.4=471-299=49÷38=
题目详情
直接写得数．
直接写得数．
1.5时：45分= 1.5×0.6= 15-5
= 0.9×99+0.9= 2÷0.25+1.1= 3
：2
=
-
=2.5×3.5×0.4= 471-299=
÷
=1.5时：45分= 1.5×0.6= 15-5
= 0.9×99+0.9= 2÷0.25+1.1= 1.5时：45分= 1.5×0.6= 15-5
=
=
4 9 4 4 9 9 0.9×99+0.9= 2÷0.25+1.1= 3
：2
=
-
=2.5×3.5×0.4= 471-299=
÷
=3
：2
= 3
：2
=
1 2 1 1 2 2 2
=
1 3 1 1 3 3
-
=
-
=
1 5 1 1 5 5
=
1 7 1 1 7 7 2.5×3.5×0.4= 471-299=
÷
=
÷
=
4 9 4 4 9 9
=
3 8 3 3 8 8
| 1.5时：45分= | 1.5×0.6= | 15-5
| 0.9×99+0.9= | 2÷0.25+1.1= | ||||||||||||
3
|
| 2.5×3.5×0.4= | 471-299= |
|
| 1.5时：45分= | 1.5×0.6= | 15-5
| 0.9×99+0.9= | 2÷0.25+1.1= | ||||||||||||
3
|
| 2.5×3.5×0.4= | 471-299= |
|
| 1.5时：45分= | 1.5×0.6= | 15-5
| 0.9×99+0.9= | 2÷0.25+1.1= | ||||||||||||
3
|
| 2.5×3.5×0.4= | 471-299= |
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▼优质解答
答案和解析
1.5时：45分=
1.5×0.6=0.9 15-5
=9
0.9×99+0.9=90 2÷0.25+1.1=9.1 3
：2
=
-
=
2.5×3.5×0.4=3.5 471-299=172
÷
=
1.5时：45分=
1.5×0.6=0.9 15-5
=9
0.9×99+0.9=90 2÷0.25+1.1=9.1 1.5时：45分=
1.5时：45分=
32 27 32 32 3227 27 271.5×0.6=0.9 1.5×0.6=0.915-5
=9
15-5
=9
4 9 4 4 49 9 9=9
5 9 5 5 59 9 9 0.9×99+0.9=90 0.9×99+0.9=902÷0.25+1.1=9.1 2÷0.25+1.1=9.13
：2
=
-
=
2.5×3.5×0.4=3.5 471-299=172
÷
=
3
：2
=
3
：2
=
3
1 2 1 1 12 2 2：2
=
2
1 3 1 1 13 3 3=
3 2 3 3 32 2 2
-
=
-
=
1 5 1 1 15 5 5-
=
1 7 1 1 17 7 7=
2 35 2 2 235 35 352.5×3.5×0.4=3.5 2.5×3.5×0.4=3.5471-299=172 471-299=172
÷
=
÷
=
4 9 4 4 49 9 9÷
=
3 8 3 3 38 8 8=
32 27 32 32 3227 27 27
1.5时：45分=
| 1.5×0.6=0.9 | 15-5
| 0.9×99+0.9=90 | 2÷0.25+1.1=9.1 | ||||||||||||||||||
3
|
| 2.5×3.5×0.4=3.5 | 471-299=172 |
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