直接写得数．580-280=900×4=220×3=58+38=24×2=23÷3=80×0=45-35=520+40=7×300=25÷8=1-59=75+15=90-7=320×3=57+17=
直接写得数．
| 580-280= | 900×4= | 220×3= | += |
| 24×2= | 23÷3= | 80×0= | -= |
| 520+40= | 7×300= | 25÷8= | 1-= |
| 75+15= | 90-7= | 320×3= | += |
直接写得数．
| 580-280= | 900×4= | 220×3= | += |
| 24×2= | 23÷3= | 80×0= | -= |
| 520+40= | 7×300= | 25÷8= | 1-= |
| 75+15= | 90-7= | 320×3= | += |
| 580-280= | 900×4= | 220×3= | += |
| 24×2= | 23÷3= | 80×0= | -= |
| 520+40= | 7×300= | 25÷8= | 1-= |
| 75+15= | 90-7= | 320×3= | += |
| 580-280= | 900×4= | 220×3= | += |
| 24×2= | 23÷3= | 80×0= | -= |
| 520+40= | 7×300= | 25÷8= | 1-= |
| 75+15= | 90-7= | 320×3= | += |
| 580-280= | 900×4= | 220×3= | += |
580-280= | 900×4= | 220×3= | += | +=| 5 |
| 8 |
| 5 |
5 | | 8 |
8 | =| 3 |
| 8 |
| 3 |
3 | | 8 |
8 | | 24×2= | 23÷3= | 80×0= | -= |
24×2= | 23÷3= | 80×0= | -= | -=| 4 |
| 5 |
| 4 |
4 | | 5 |
5 | =| 3 |
| 5 |
| 3 |
3 | | 5 |
5 | | 520+40= | 7×300= | 25÷8= | 1-= |
520+40= | 7×300= | 25÷8= | 1-= | =| 5 |
| 9 |
| 5 |
5 | | 9 |
9 | | 75+15= | 90-7= | 320×3= | += |
75+15= | 90-7= | 320×3= | += | +=| 5 |
| 7 |
| 5 |
5 | | 7 |
7 | =| 1 |
| 7 |
| 1 |
1 | | 7 |
7 |
答案和解析
| 580-280=300 | 900×4=3600 | 220×3=660 | +=1 |
| 24×2=48 | 23÷3=7…2 | 80×0=0 | -= |
| 520+40=560 | 7×300=2100 | 25÷8=3…1 | 1-= |
| 75+15=90 | 90-7=83 | 320×3=960 | += |
| 580-280=300 | 900×4=3600 | 220×3=660 | +=1 |
| 24×2=48 | 23÷3=7…2 | 80×0=0 | -= |
| 520+40=560 | 7×300=2100 | 25÷8=3…1 | 1-= |
| 75+15=90 | 90-7=83 | 320×3=960 | += |
| 580-280=300 | 900×4=3600 | 220×3=660 | +=1 |
580-280=300 | 580-280=300
900×4=3600 | 900×4=3600
220×3=660 | 220×3=660
+=1 | +=1| 5 |
| 8 |
| 5 |
5 | 5
| 8 |
8 | 8+
=1| 3 |
| 8 |
| 3 |
3 | 3
| 8 |
8 | 8=1
| 24×2=48 | 23÷3=7…2 | 80×0=0 | -= |
24×2=48 | 24×2=48
23÷3=7…2 | 23÷3=7…2
80×0=0 | 80×0=0
-= | -=| 4 |
| 5 |
| 4 |
4 | 4
| 5 |
5 | 5-
=| 3 |
| 5 |
| 3 |
3 | 3
| 5 |
5 | 5=
| 1 |
| 5 |
| 1 |
1 | 1
| 5 |
5 | 5
| 520+40=560 | 7×300=2100 | 25÷8=3…1 | 1-= |
520+40=560 | 520+40=560
7×300=2100 | 7×300=2100
25÷8=3…1 | 25÷8=3…1
1-= | 1-
=| 5 |
| 9 |
| 5 |
5 | 5
| 9 |
9 | 9=
| 4 |
| 9 |
| 4 |
4 | 4
| 9 |
9 | 9
| 75+15=90 | 90-7=83 | 320×3=960 | += |
75+15=90 | 75+15=90
90-7=83 | 90-7=83
320×3=960 | 320×3=960
+= | +=| 5 |
| 7 |
| 5 |
5 | 5
| 7 |
7 | 7+
=| 1 |
| 7 |
| 1 |
1 | 1
| 7 |
7 | 7=
| 6 |
| 7 |
| 6 |
6 | 6
| 7 |
7 | 7
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