# Worksheet: Estimating Products: Multiplying by One-Digit Numbers

In this worksheet, we will practice estimating the products of one-digit numbers and two- or three-digit numbers by rounding to the nearest ten or hundred.

Q1:

We can estimate to check our work.

Estimate by rounding 83 to the nearest ten.

Find the product. Q2:

Look at how Chloe estimated the product by rounding the three-digit number to the nearest hundred. Use her method to estimate .

Use her method to estimate .

Q3:

We can estimate to check our work.

Estimate by rounding 269 to the nearest hundred.

Find the product. Q4:

An amphitheater has 47 rows. Each row seats 7 spectators. Estimate the total capacity of the amphitheater to the nearest ten.

Q5:

Sophia is estimating the result of by rounding both factors to the nearest ten.

Fill in the blank: she finds that the exact answer is between and .

• A40, 50
• B20, 30
• C30, 40
• D60, 70
• E50, 60

State the two numbers that the exact answer is between.

• A120 and 150
• B47 and 3
• C30 and 50
• D40 and 60
• E40 and 50

Which of the two numbers is the exact answer closer to?

Q6:

In one day, Jackson can decorate 17 cakes and Madison can decorate 19.

Pick the best estimate for the number of cakes they can decorate in 5 days.

• A200
• B100
• C300
• D80
• E30

Q7:

Which product gives an estimate of 140 when one of the multiplied numbers is rounded to the nearest 10?

• A
• B
• C
• D
• E

Q8:

A teacher asked their students to estimate the product of . Ethan got 120, whereas Charlotte got 90. Estimate the product yourself and decide which student is correct.

• AEthan
• BCharlotte

Q9:

Which product gives an estimate of 600 when one of the multiplied numbers is rounded to the nearest 100?

• A
• B
• C
• D
• E

Q10:

Olivia needed to find the result of . She rounded the first factor the nearest 100 to estimate the product and got 900. Was she correct?

• ANo
• BYes