1. 在○里填上“+”“−”“×”或“÷”。
0.8○0.7=0.56
720○8=90
8.08○0.8=7.28
24.3○0.3=7.29
1.2○0.6=0.72
24.3○0.03=24.27
0.56○0.8=1.36
21○0.3=20.7
12.53○2.9=15.43
0.8○0.7=0.56
720○8=90
8.08○0.8=7.28
24.3○0.3=7.29
1.2○0.6=0.72
24.3○0.03=24.27
0.56○0.8=1.36
21○0.3=20.7
12.53○2.9=15.43
答案
1. × 2. ÷ 3. − 4. × 5. × 6. − 7. + 8. − 9. +
2. 填一填。
0.93+(
(
(
(
75−(
28.93×(
(
(
0+(
125×(
54−(
28.93−(
750÷(
(
0.93+(
0.07
)=1(
16
)−2.27=13.73(
87.5
)+12.5=100(
84.4
)−10.5=73.975−(
44.62
)=30.3828.93×(
0
)=0(
20
)×17=340(
54.54
)−54=0.540+(
39.12
)=39.12125×(
0.8
)=10054−(
53.46
)=0.5428.93−(
28.93
)=0750÷(
30
)=25(
0
)÷0.54=0答案
1. 0.07 2. 16 3. 87.5 4. 84.4 5. 44.62 6. 0 7. 20 8. 54.54 9. 39.12 10. 0.8 11. 53.46 12. 28.93 13. 30 14. 0
3. 列竖式计算。
$95.37 - 19.73 =$
$54.05 × 7 =$
$63.4 + 26.89 =$
$9.5 × 18.3 =$
$29.07 - 17.5 =$
$13.9 + 8.61 =$
$95.37 - 19.73 =$
$54.05 × 7 =$
$63.4 + 26.89 =$
$9.5 × 18.3 =$
$29.07 - 17.5 =$
$13.9 + 8.61 =$
答案
1. 75.64 2. 378.35 3. 90.29 4. 173.85 5. 11.57 6. 22.51
登录