Read/Write Numbers to 1000

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Answer Key & Explanations

Read/Write Numbers to 1000 · Grade 2 · Worksheet 1

1. Tane collected 66 seashells at the beach. Then Tane found 412 more seashells. How many seashells does Tane have now? Answer: 478 Solution: Start with 66 seashells. Add 412 more seashells: 66 + 412 = 478.
   Full step-by-step solution

   Step 1: Start with 66 seashells. Step 2: Add 412 more seashells: 66 + 412 = 478. The answer is 478.

2. Write as a number: eight hundred fifty. Answer: 850 Solution: The words 'eight hundred' mean 8 hundreds, which is 800. The words 'fifty' mean 5 tens, which is 50. There are no ones mentioned, so the ones digit is 0.
   Full step-by-step solution

   Step 1: The words 'eight hundred' mean 8 hundreds, which is 800. Step 2: The words 'fifty' mean 5 tens, which is 50. Step 3: There are no ones mentioned, so the ones digit is 0. Step 4: Combine: 800 + 50 + 0 = 850. The answer is 850.

3. Write as a number: seven hundred fifty-five Answer: 755 Solution: 'seven hundred' means 700. 'fifty-five' means 5 tens and 5 ones, which is 55. Combine them: 700 + 55 = 755.
   Full step-by-step solution

   Step 1: 'seven hundred' means 700. Step 2: 'fifty-five' means 5 tens and 5 ones, which is 55. Step 3: Combine them: 700 + 55 = 755. The answer is 755.

4. Noah collected 421 seashells at the beach. Then Noah found 372 more seashells. How many seashells does Noah have now? Answer: 793 Solution: Start with 421 seashells. Add 372 more seashells: 421 + 372 = 793.
   Full step-by-step solution

   Step 1: Start with 421 seashells. Step 2: Add 372 more seashells: 421 + 372 = 793. The answer is 793.

5. Write as a number: five hundred seventeen Answer: 517 Solution: Identify the hundreds part. 'Five hundred' means 5 hundreds, which is 500. Identify the tens and ones part.
   Full step-by-step solution

   Step 1: Identify the hundreds part. 'Five hundred' means 5 hundreds, which is 500. Step 2: Identify the tens and ones part. 'Seventeen' means 1 ten and 7 ones, which is 10 + 7 = 17. Step 3: Add the hundreds to the tens and ones: 500 + 17 = 517. The final answer is 517.

6. Matiu is looking at a number chart. The chart shows the number 479 written in numerals. Can you write this number in words? Answer: four hundred seventy-nine Solution: Look at the number 479. The digit 4 is in the hundreds place, so it is 400, which is 'four hundred'. The digits 7 and 9 are in the tens and ones places.
   Full step-by-step solution

   Step 1: Look at the number 479. The digit 4 is in the hundreds place, so it is 400, which is 'four hundred'. Step 2: The digits 7 and 9 are in the tens and ones places. Together, 79 is 'seventy-nine'. Step 3: Combine them: 'four hundred seventy-nine'. The answer is four hundred seventy-nine.

7. Hana has a chart that shows the number 462 written in numerals. She needs to write it in words. What is 462 written in words? Answer: four hundred sixty-two Solution: Look at the number 462. The digit 4 is in the hundreds place, so it means 4 hundreds, or 'four hundred'. The digit 6 is in the tens place, so it means 6 tens, or 'sixty'.
   Full step-by-step solution

   Step 1: Look at the number 462. The digit 4 is in the hundreds place, so it means 4 hundreds, or 'four hundred'. Step 2: The digit 6 is in the tens place, so it means 6 tens, or 'sixty'. Step 3: The digit 2 is in the ones place, so it means 2 ones, or 'two'. Step 4: Put the parts together: 'four hundred' + 'sixty' + 'two' = 'four hundred sixty-two'. The answer is four hundred sixty-two.

8. Noah has 52 toy cars in his collection. For his birthday, his aunt gives him a new set with 38 more toy cars. How many toy cars does Noah have now? Answer: 90 Solution: Noah starts with 52 toy cars He receives 38 more toy cars Add the two amounts: 52 + 38 Add the ones: 2 + 8 = 10 (write 0, carry 1) Add the tens: 5 + 3 + 1 = 9 Combine: 90 The answer is 90.
   Full step-by-step solution

   Step 1: Noah starts with 52 toy cars Step 2: He receives 38 more toy cars Step 3: Add the two amounts: 52 + 38 Step 4: Add the ones: 2 + 8 = 10 (write 0, carry 1) Step 5: Add the tens: 5 + 3 + 1 = 9 Step 6: Combine: 90 The answer is 90.

9. Kaia has a jar of 635 jellybeans. She sees the number written on a sticky note on the jar. Write the number 635 in words. Answer: six hundred thirty-five Solution: Look at the number 635. The digit 6 is in the hundreds place, so it is 600, or 'six hundred.' Step 2: The next two digits are 3 and 5. The 3 is in the tens place (30) and the 5 is in the ones place (5).
   Full step-by-step solution

   Step 1: Look at the number 635. The digit 6 is in the hundreds place, so it is 600, or 'six hundred.' Step 2: The next two digits are 3 and 5. The 3 is in the tens place (30) and the 5 is in the ones place (5). Together, 35 is written as 'thirty-five.' Step 3: Combine the parts: 'six hundred thirty-five.' The answer is six hundred thirty-five.

10. Liam has 45 stickers in his collection. His friend Emma gives him 28 more stickers for his birthday. How many stickers does Liam have now? Answer: 73 Solution: Liam starts with 45 stickers. Emma gives him 28 more stickers. This means we need to add the new stickers to the ones he already has.
    Full step-by-step solution

    Liam starts with 45 stickers. Emma gives him 28 more stickers. This means we need to add the new stickers to the ones he already has. So we perform the addition: 45 + 28. Let's break this down step-by-step: Step 1: Add the numbers in the ones place. The number 45 has 5 in the ones place. The number 28 has 8 in the ones place. 5 + 8 = 13. We write down the 3 in the ones place of our answer and carry over the 1 to the tens place. Step 2: Add the numbers in the tens place, including the carried-over amount. The number 45 has 4 in the tens place. The number 28 has 2 in the tens place. We also have the carried-over 1. So we calculate: 4 + 2 + 1 = 7. We write down the 7 in the tens place of our answer. Step 3: Combine the digits from the tens and ones places. The tens place gave us 7, and the ones place gave us 3. This makes the number 73. Therefore, after receiving the new stickers, Liam has 73 stickers in total.