# Estimating a Product of Whole Numbers Online Quiz

Following quiz provides Multiple Choice Questions (MCQs) related to **Estimating a Product of Whole Numbers**. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using **Show Answer** button. You can use **Next Quiz** button to check new set of questions in the quiz.

Q 1 - Estimate the product 8541 × 653 by first rounding each number so that it has only one non-zero digit

### Answer : A

### Explanation

**Step 1:**

Rounding 8541 so that it has only one non-zero digit is rounding it to nearest thousand.

8541 rounds to nearest thousand as 9000 as hundreds digit is 5.

**Step 2:**

Rounding 653 so that it has only one non-zero digit is rounding it to nearest hundred.

653 rounds to nearest hundred as 700 as tens digit is 5.

**Step 3:**

So the estimated product after rounding each number so that it has only one non-zero digit is

9000 × 700 = 6300000

Q 2 - Estimate the product 6853 × 535 by first rounding each number so that it has only one non-zero digit

### Answer : B

### Explanation

**Step 1:**

Rounding 6853 so that it has only one non-zero digit is rounding it to nearest thousand.

6853 rounds to nearest thousand as 7000 as hundreds digit 8 > 5.

**Step 2:**

Rounding 535 so that it has only one non-zero digit is rounding it to nearest hundred.

535 rounds to nearest hundred as 500 as tens digit 3 < 5.

**Step 3:**

So the estimated product after rounding each number so that it has only one non-zero digit is

7000 × 500 = 3500000

Q 3 - Estimate the product 617 × 84 by first rounding each number so that it has only one non-zero digit.

### Answer : D

### Explanation

**Step 1:**

Rounding 617 so that it has only one non-zero digit is rounding it to nearest hundred.

617 rounds to 600 as tens digit 1 < 5.

**Step 2:**

Rounding 84 so that it has only one non-zero digit is rounding it to nearest ten.

84 rounds down to 80 as ones digit 4 < 5.

**Step 3:**

So the estimated product after rounding each number so that it has only one non-zero digit is

600 × 80 = 48000

Q 4 - Estimate the product 3832 × 346 by first rounding each number so that it has only one non-zero digit

### Answer : A

**Step 1:**

Rounding 3832 so that it has only one non-zero digit is rounding it to nearest thousand.

3832 rounds up to 4000 as the hundreds digit 8 > 5.

**Step 2:**

Rounding 346 so that it has only one non-zero digit is rounding it to nearest hundred.

346 rounds to nearest hundred as 300 as tens digit 4 < 5.

**Step 3:**

### Explanation

So the estimated product after rounding each number so that it has only one non-zero digit is

4000 × 300 = 1200000

Q 5 - Estimate the product 395 × 26 by first rounding each number so that it has only one non-zero digit.

### Answer : B

### Explanation

**Step 1:**

Rounding 395 so that it has only one non-zero digit is rounding it to nearest hundred.

395 rounds to nearest hundred as 400 as tens digit 9 > 5.

**Step 2:**

Rounding 26 so that it has only one non-zero digit is rounding it to nearest ten.

26 rounds to nearest ten as 30 as its ones digit 6 > 5.

**Step 3:**

so the estimated product after rounding each number so that it has only one non-zero digit is

400 × 30 = 12000

Q 6 - Estimate the product 847 × 38 by first rounding each number so that it has only one non-zero digit.

### Answer : C

### Explanation

**Step 1:**

Rounding 847 so that it has only one non-zero digit is rounding it to nearest hundred.

847 rounds to nearest hundred as 800 as tens digit 4 < 5.

**Step 2:**

Rounding 38 so that it has only one non-zero digit is rounding it to nearest ten.

38 rounds to nearest ten as 40 as ones digit 8 > 5.

**Step 3:**

So the estimated product after rounding each number so that it has only one non-zero digit is

800 × 40 = 32000

Q 7 - Estimate the product 893 × 53 by first rounding each number so that it has only one non-zero digit.

### Answer : D

### Explanation

**Step 1:**

Rounding 893 so that it has only one non-zero digit is rounding it to nearest hundred.

893 rounds to nearest hundred as 900 as tens digit 9 > 5.

**Step 2:**

Rounding 53 so that it has only one non-zero digit is rounding it to nearest ten.

53 rounds to nearest ten as 50 as ones digit 3 < 5.

**Step 3:**

So the estimated product after rounding each number so that it has only one non-zero digit is

900 × 50 = 45000

Q 8 - Estimate the product 2082 × 178 by first rounding each number so that it has only one non-zero digit

### Answer : B

### Explanation

**Step 1:**

Rounding 2082 so that it has only one non-zero digit is rounding it to nearest thousand.

2082 rounds to nearest thousand as 2000 as hundreds digit 0 < 5.

**Step 2:**

Rounding 178 so that it has only one non-zero digit is rounding it to nearest hundred.

178 rounds to nearest hundred as 200 as tens digit 7 > 5.

**Step 3:**

The estimated product after rounding each number so that it has only one non-zero digit is

2000 × 200 = 400000

Q 9 - Estimate the product 552 × 82 by first rounding each number so that it has only one non-zero digit.

### Answer : A

### Explanation

**Step 1:**

Rounding 552 so that it has only one non-zero digit is rounding it to nearest hundred.

552 rounds to nearest hundred as 600 as tens digit is 5.

**Step 2:**

Rounding 82 so that it has only one non-zero digit is rounding it to nearest ten.

82 rounds to nearest ten as 80 as ones digit 2 < 5.

**Step 3:**

So the estimated product after rounding each number so that it has only one non-zero digit is

600 × 80 = 48000

Q 10 - Estimate the product 6803 × 537 by first rounding each number so that it has only one non-zero digit

### Answer : C

### Explanation

**Step 1:**

Rounding 6803 so that it has only one non-zero digit is rounding it to nearest thousand.

6803 rounds to nearest thousand as 7000 as hundreds digit 8 > 5.

**Step 2:**

Rounding 537 so that it has only one non-zero digit is rounding it to nearest hundred.

537 rounds to nearest hundred as 500 as tens digit 3 < 5.

**Step 3:**

So the estimated product after rounding each number so that it has only one non-zero digit is

7000 × 500 = 3500000