Maths worksheet for class 3, Grade 3 math worksheets pdf - Free Printable

To solve these multiplication problems, we can use a simple trick: ignore the zero at the end of the "tens" number, multiply the single digits, and then add the zero back to the answer.

Let's break down a few examples to make sure the logic is sound:

* Problem 1: $4 \times 50$
* Step 1: Ignore the zero in 50. Now we have $4 \times 5$.
* Step 2: $4 \times 5 = 20$.
* Step 3: Add the zero back. The answer is 200.

* Problem 2: $2 \times 70$
* Step 1: Ignore the zero. $2 \times 7$.
* Step 2: $2 \times 7 = 14$.
* Step 3: Add the zero. The answer is 140.

* Problem 5: $7 \times 80$
* Step 1: Ignore the zero. $7 \times 8$.
* Step 2: $7 \times 8 = 56$.
* Step 3: Add the zero. The answer is 560.

Now, let's calculate the rest of the problems using this same method:

1. $4 \times 50 \rightarrow 4 \times 5 = 20 \rightarrow$ 200
2. $2 \times 70 \rightarrow 2 \times 7 = 14 \rightarrow$ 140
3. $3 \times 80 \rightarrow 3 \times 8 = 24 \rightarrow$ 240
4. $4 \times 20 \rightarrow 4 \times 2 = 8 \rightarrow$ 80
5. $7 \times 80 \rightarrow 7 \times 8 = 56 \rightarrow$ 560
6. $5 \times 70 \rightarrow 5 \times 7 = 35 \rightarrow$ 350
7. $5 \times 10 \rightarrow 5 \times 1 = 5 \rightarrow$ 50
8. $6 \times 50 \rightarrow 6 \times 5 = 30 \rightarrow$ 300
9. $5 \times 90 \rightarrow 5 \times 9 = 45 \rightarrow$ 450
10. $9 \times 90 \rightarrow 9 \times 9 = 81 \rightarrow$ 810
11. $2 \times 90 \rightarrow 2 \times 9 = 18 \rightarrow$ 180
12. $2 \times 60 \rightarrow 2 \times 6 = 12 \rightarrow$ 120
13. $2 \times 50 \rightarrow 2 \times 5 = 10 \rightarrow$ 100
14. $8 \times 70 \rightarrow 8 \times 7 = 56 \rightarrow$ 560
15. $4 \times 10 \rightarrow 4 \times 1 = 4 \rightarrow$ 40
16. $6 \times 60 \rightarrow 6 \times 6 = 36 \rightarrow$ 360
17. $7 \times 20 \rightarrow 7 \times 2 = 14 \rightarrow$ 140
18. $5 \times 80 \rightarrow 5 \times 8 = 40 \rightarrow$ 400
19. $1 \times 70 \rightarrow 1 \times 7 = 7 \rightarrow$ 70
20. $5 \times 40 \rightarrow 5 \times 4 = 20 \rightarrow$ 200
21. $9 \times 40 \rightarrow 9 \times 4 = 36 \rightarrow$ 360
22. $7 \times 10 \rightarrow 7 \times 1 = 7 \rightarrow$ 70
23. $3 \times 10 \rightarrow 3 \times 1 = 3 \rightarrow$ 30
24. $6 \times 90 \rightarrow 6 \times 9 = 54 \rightarrow$ 540
25. $8 \times 20 \rightarrow 8 \times 2 = 16 \rightarrow$ 160
26. $4 \times 40 \rightarrow 4 \times 4 = 16 \rightarrow$ 160
27. $4 \times 70 \rightarrow 4 \times 7 = 28 \rightarrow$ 280

Final Answer:
1. 200
2. 140
3. 240
4. 80
5. 560
6. 350
7. 50
8. 300
9. 450
10. 810
11. 180
12. 120
13. 100
14. 560
15. 40
16. 360
17. 140
18. 400
19. 70
20. 200
21. 360
22. 70
23. 30
24. 540
25. 160
26. 160
27. 280