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1.口算下列各题
5+ =
72-=
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12- =
24-=
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4- =
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14- =
9-=
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+32=
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45× =
9×=
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6.5×5 6.5=
1×0.85=
4.73×3.9=
47.3×3.9=
47.3×0.391=
0.473×0.39=
2.4×5=
1×1.25=
0.45×0.09=
6.2×0.03=
0.125×0.125=
9.9×2.5×0.4=
9×0.18=
0.25×16=
0.7×8=
3.05×4=
6.8×2=
5.2×3.05×4.8=
47.3×0.391=
0.473×0.39=
0.45×0.09=
6.2×0.03=
×12=
×0=
0.77×1.1=
1.2-0.08=
8- 0.52=
2.5× 3.6 =
4. 9.4×6=
5.0.8×0.92=
1.3×0.4=
5.43×0.86=
78.58×3.7=
0.85×1.01 =
9×2.3=
0.1×0.01 =
0.28×35=
4.68×4.5=
0.25×0.5=
2.5×1.25=
25.7×3.29=
6.71×25.7=
8- 0.52=
2.5× 3.6 =
0.45×0.09=
6.2×0.03=
1.05×0.1=
17.5×7.5×2=
5.5×11=
1.6×0.5=
2.5×0.4=
0.36×0.9=
1.25×8=
1.6×0.4=
0.48×4=
0.9×0.6=
13.2+4.8=
6.3-0.9=
0.25×2.4=
3×1.03=
+9=
+32=
+ =
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2.5×0.4=
0.36×0.9=
1.3×0.4=
5.43×0.86=
+16=
+16 =
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5+ =
72-=
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+16 =
12- =
24-=
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4-=
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14- =
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45× =
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