When multiplying $54 \times 36$, why is a zero placed in the ones place before finding the second partial product?

Because you are multiplying by the tens digit, which represents 30.

To make the final addition problem easier to calculate.

It is a rule that does not have a specific reason.

Because the first partial product always ends in a zero.

Multiplying Two-Digit Numbers Practice — Grade 4 math

Lesson 3: Multiplying Two-Digit Numbers — Practice Questions

1. Use the standard algorithm to find the product of $53$ and $24$. The product is ___.
2. When calculating $78 \times 16$ using the standard algorithm, what is the first partial product?
- A. 468
- B. 780
- C. 1248
- D. 78
3. In the problem $39 \times 42$, what is the value of the second partial product that you would write below the first one?
- A. 156
- B. 78
- C. 1560
- D. 1638
4. A school orders 38 boxes of pencils. Each box contains 52 pencils. What is the total number of pencils the school ordered? The total is ___ pencils.
5. When multiplying $54 \times 36$, why is a zero placed in the ones place before finding the second partial product?
- A. Because you are multiplying by the tens digit, which represents 30.
- B. To make the final addition problem easier to calculate.
- C. It is a rule that does not have a specific reason.
- D. Because the first partial product always ends in a zero.
6. Use the standard algorithm to calculate the product of $53 \times 28$. The result is ___.
7. When calculating $74 \times 36$, what is the second partial product you would find using the standard algorithm?
- A. 444
- B. 222
- C. 2220
- D. 2664
8. What is the product of $86 \times 47$? The answer is ___.
9. When multiplying $58 \times 42$, why is a zero placed in the ones place of the second partial product?
- A. To make the addition easier.
- B. Because the first partial product ends in zero.
- C. Because you are multiplying by the tens digit, which represents 40.
- D. It is a rule that has no specific reason.
10. In the problem $39 \times 54$, what is the first partial product that you calculate? The value is ___.