04-24-23 Numbers and Operations in Base Ten

There are 165 cars in the parking lot. Select the chart that shows 165 rounded to the nearest 10.

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When rounding to the nearest ten and the nearest hundred, what number rounds to 300?

• 294

• 299

• 390

• 399

Select the numbers that round to 500 when rounded to the nearest hundred. Select all that apply.

• 450

• 483

• 567

• 438

• 542

When rounding to the nearest hundred, which number is the greatest number that could be rounded to 400?

• 349

• 350

• 449

• 450

What is 1,000 rounded to the nearest ten?

• 900

• 990

• 1000

• 1010

Look at the number sentence below.

158 + _ = 463

Which number should go in the box to make the number sentence correct?

• 205

• 215

• 305

• 315

Find the sum.

147 + 218 + 26 =

(a)  

Help Sandy find the sum. Select all that apply.

• Add the ones.

• Regroup the ones.

• Add the regrouped ten.

• Regroup the tens.

• Add the regrouped hundred.

Andi solved this problem.  She said the difference is 221.  Explain Andi’s error and tell the correct difference.

• Andi regrouped the ones.  The correct answer is 239.

• Andi regrouped the ones.  The correct answer is 181.

• Andi did not regroup the tens.  The correct answer is 181.

• Andi did not regroup the tens. The correct answer is 121.

Andrea bought 5 backpacks. She paid $20 for each backpack. What was the total amount Andrea paid for all 5 backpacks?

• $10

• $25

• $100

• $200