直接写得数．29×72+71×72=7.2÷0.8=13-14=1298-567=1.25×19×0.8=23×16=13×80%=368+285=10.75-（0.75+3.4）=90×60%=
直接写得数．
29×72+71×72= | 7.2÷0.8= | -= | 1298-567= |
| 1.25×19×0.8= | ×= | 13×80%= | 368+285= |
| 10.75-（0.75+3.4）= | 90×60%= |
直接写得数．
29×72+71×72= | 7.2÷0.8= | -= | 1298-567= |
| 1.25×19×0.8= | ×= | 13×80%= | 368+285= |
| 10.75-（0.75+3.4）= | 90×60%= |
直接写得数．
29×72+71×72= | 7.2÷0.8= | -= | 1298-567= |
直接写得数．
29×72+71×72= | 7.2÷0.8= | -= | -=| 1 |
1 | | 3 |
3 | =| 1 |
1 | | 4 |
4 | 1298-567= | | 1.25×19×0.8= | ×= | 13×80%= | 368+285= |
1.25×19×0.8= | ×= | ×=| 2 |
2 | | 3 |
3 | =| 1 |
1 | | 6 |
6 | 13×80%= | 368+285= | | 10.75-（0.75+3.4）= | 90×60%= |
10.75-（0.75+3.4）= | 90×60%= |
答案和解析
| 29×72+71×72=7200 | 7.2÷0.8=9 | -= | 1298-567=731 |
| 1.25×19×0.8=19 | ×= | 13×80%=10.4 | 368+285=653 |
| 10.75-（0.75+3.4）=6.6 | 90×60%=54． |
| 29×72+71×72=7200 | 7.2÷0.8=9 | -= | 1298-567=731 |
29×72+71×72=7200 | 29×72+71×72=7200
7.2÷0.8=9 | 7.2÷0.8=9
-= | -=| 1 |
1 | 1
| 3 |
3 | 3-
=| 1 |
1 | 1
| 4 |
4 | 4=
| 1 |
1 | 1
| 12 |
12 | 12
1298-567=731 | 1298-567=731
| 1.25×19×0.8=19 | ×= | 13×80%=10.4 | 368+285=653 |
1.25×19×0.8=19 | 1.25×19×0.8=19
×= | ×=| 2 |
2 | 2
| 3 |
3 | 3×
=| 1 |
1 | 1
| 6 |
6 | 6=
| 1 |
1 | 1
| 9 |
9 | 9
13×80%=10.4 | 13×80%=10.4
368+285=653 | 368+285=653
| 10.75-（0.75+3.4）=6.6 | 90×60%=54． |
10.75-（0.75+3.4）=6.6 | 10.75-（0.75+3.4）=6.6
90×60%=54． | 90×60%=54．
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