Nhân hai phân số: bài giảng 3 slide và 3 câu hỏi lớp 3

3 Slides • 3 Questions

1

Nhân hai phân số

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2

Muốn nhân hai phân số, ta lấy tử số nhân tử số, mẫu số nhân mẫu số.

3

Thực hành

4

Multiple Choice

$\frac{5}{7}\times\frac{3}{4}$

1

$\frac{15}{28}$

2

$\frac{420}{28}$

3

$\frac{21}{20}$

4

$\frac{20}{21}$

5

Multiple Choice

$30\times\frac{3}{4}$

1

$\frac{90}{4}$

2

$\frac{3}{120}$

6

Multiple Select

Tìm 2 cách để giải phép tính này : $40\times\frac{4}{200}$

1

$\frac{40\times4}{200}=\frac{160}{200}$

2

$\frac{40}{1}\times\frac{4}{200}=\frac{160}{200}$

3

$\frac{4}{40\times200}=\frac{4}{8000}$

Nhân hai phân số

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