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Mathematics Unit 5 Decimal Multiplication in the second volume of the fourth grade
Count 20 words orally.

0.8×25

7.4× 100

0.7×5

0.9× 1 1

0.96×0?

0.02×500

12.5×8?

0.3× 10?

1.4×3

1. 12×2

0.39× 10

4. 1×6

1.9×8?

2.3×5?

4.3×5

2.9×3

3.6×2

7.3×4

1.2×5

4.5×5

Vertical 20 lanes

7.3+3.8×2.3=? 1.8×9.6- 1.7=?

9.3+6. 1×4.8=? 27.5×5.7+5.8=?

8.7×0. 1-0. 1=8.999- 1.7×4.7=?

8.6×8.9+8=? 1.7+0.3×7.6=?

4.584-2. 1×0.4=? 9.8×4.3+9.6=?

7.7×9.9+7.7=? 8.7+3.4×9=?

0.3+2.8×3.5=? 5× 1. 1-0.2=?

2.9×8.2+9.2=? 3.9× 1.7+0.5=?

0.739- 1. 1×4.9=0.3×0.9-0. 1=?

8.63×0.42? 0.38×2.6

Detachable 20 lanes

0.26×7? 3. 105× 18? 63.08×25

1 1.4× 19? 3.8×5? 0.59×4

4.3×28? 0.08× 125? 24×0.5?

25×0. 125? 4.87× 100? 28× 1.5

0. 125×0.25×8×4

7.4×0.28+0.28×2.6

4.8×0.9+0.48

(4-0.4)×2.5

2.9×8.2+9.2=? 3.9× 1.7+0.5=?

0.739- 1. 1×4.9=0.3×0.9-0. 1=?

9.2+9×3.9=? 8.8+0.6×0. 1=?

8.9×5.2+9.3=? 4.8+3. 1×9. 1=?

1.3×2.2-0.2=? 0.9+8.3×8.3=?

9.08-3×7.6= 1.288-3.2×0.9=