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Estimate Lengths

Grade 2 · Measurement · Worksheet 3

  1. Mason estimates that his jump rope is about 80 centimeters long. About how many centimeters long is Mason's jump rope? Answer: ______________
  2. Mason's jump rope is about 72 inches long. About how many feet long is Mason's jump rope? Answer: ______________
  3. Liam has 32 crayons in his box. His teacher gives him 25 more crayons for a special art project. How many crayons does Liam have now? Answer: ______________
  4. Emma is collecting shells at the beach. She found 28 white shells and 36 striped shells. How many shells did Emma find in total? Answer: ______________
  5. Noah's desk is about 61 centimeters long. Estimate: About how many centimeters long is Noah's desk? Answer: ______________
  6. Isabella's new bookshelf is about 8 feet tall. She wants to estimate if her 6-foot tall toy castle will fit on the top shelf. About how many feet tall is the bookshelf? Answer: ______________
  7. Isabella is looking at her new bookshelf. She wants to estimate how tall it is. If she knows that a typical door is about 7 feet tall, and her bookshelf is a little shorter than the door, about how many feet tall is Isabella's bookshelf? Answer: ______________
  8. Isabella's jump rope is about how many feet long? Answer: ______________
  9. Noah estimates that his desk is about 31 inches long. About how many inches long is Noah's desk? Answer: ______________
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Answer Key & Explanations

Estimate Lengths · Grade 2 · Worksheet 3

  1. Mason estimates that his jump rope is about 80 centimeters long. About how many centimeters long is Mason's jump rope? Answer: 80 centimeters Solution: Read the problem carefully. Mason estimates that his jump rope is about 80 centimeters long. The word 'about' tells us this is an estimate, not an exact measurement.
    Full step-by-step solution

    Step 1: Read the problem carefully. Mason estimates that his jump rope is about 80 centimeters long. Step 2: The word 'about' tells us this is an estimate, not an exact measurement. Step 3: The estimated length given in the problem is 80 centimeters. Step 4: So, Mason's jump rope is about 80 centimeters long. Final answer: 80 centimeters.

  2. Mason's jump rope is about 72 inches long. About how many feet long is Mason's jump rope? Answer: 6 feet Solution: Recall that 1 foot = 12 inches. Mason's jump rope is about 72 inches long. To find how many feet, divide the total inches by 12: 72 ÷ 12 = 6.
    Full step-by-step solution

    Step 1: Recall that 1 foot = 12 inches. Step 2: Mason's jump rope is about 72 inches long. Step 3: To find how many feet, divide the total inches by 12: 72 ÷ 12 = 6. Step 4: So, the jump rope is about 6 feet long. Final answer: 6 feet.

  3. Liam has 32 crayons in his box. His teacher gives him 25 more crayons for a special art project. How many crayons does Liam have now? Answer: 57 Solution: Liam starts with 32 crayons. His teacher gives him 25 more crayons. This means we need to add 25 to 32.
    Full step-by-step solution

    Let's solve this step-by-step. Step 1: Liam starts with 32 crayons. Step 2: His teacher gives him 25 more crayons. This means we need to add 25 to 32. Step 3: Write the addition: 32 + 25 Step 4: Add the ones place first: 2 + 5 = 7 Write down 7 in the ones place. Step 5: Add the tens place: 3 + 2 = 5 Write down 5 in the tens place. Step 6: Combine the tens and ones: The tens place gives 50, the ones place gives 7, so together we have 50 + 7 = 57. Step 7: Final answer: Liam now has 57 crayons.

  4. Emma is collecting shells at the beach. She found 28 white shells and 36 striped shells. How many shells did Emma find in total? Answer: 64 shells Solution: Emma found 28 white shells Emma found 36 striped shells Add the white shells and striped shells together: 28 + 36 First add the ones: 8 + 6 = 14 (write down 4, carry over 1 to the tens) Then add the tens: 2 + 3 + 1 = 6 Combine the tens and ones: 60 + 4 = 64 Emma found 64 shells in total.
    Full step-by-step solution

    Step 1: Emma found 28 white shells Step 2: Emma found 36 striped shells Step 3: Add the white shells and striped shells together: 28 + 36 Step 4: First add the ones: 8 + 6 = 14 (write down 4, carry over 1 to the tens) Step 5: Then add the tens: 2 + 3 + 1 = 6 Step 6: Combine the tens and ones: 60 + 4 = 64 Emma found 64 shells in total.

  5. Noah's desk is about 61 centimeters long. Estimate: About how many centimeters long is Noah's desk? Answer: 61 centimeters Solution: Read the problem carefully. It says Noah's desk is about 61 centimeters long. The word 'about' tells us this is already an estimate, not an exact measurement.
    Full step-by-step solution

    Step 1: Read the problem carefully. It says Noah's desk is about 61 centimeters long. Step 2: The word 'about' tells us this is already an estimate, not an exact measurement. Step 3: The question asks us to estimate the length. Since the problem already gives an estimate of 61 centimeters, we can use that number. Step 4: So, the estimated length of Noah's desk is 61 centimeters. Final answer: 61 centimeters.

  6. Isabella's new bookshelf is about 8 feet tall. She wants to estimate if her 6-foot tall toy castle will fit on the top shelf. About how many feet tall is the bookshelf? Answer: About 8 feet Solution: The problem says the bookshelf is 'about 8 feet tall.' This means 8 feet is an estimate of the bookshelf's height.
    Full step-by-step solution

    Step 1: The problem says the bookshelf is 'about 8 feet tall.' This means 8 feet is an estimate of the bookshelf's height. Step 2: The question asks, 'About how many feet tall is the bookshelf?' Step 3: We use the information given: the bookshelf is about 8 feet tall. So the estimate is 8 feet. Final answer: About 8 feet.

  7. Isabella is looking at her new bookshelf. She wants to estimate how tall it is. If she knows that a typical door is about 7 feet tall, and her bookshelf is a little shorter than the door, about how many feet tall is Isabella's bookshelf? Answer: About 6 feet Solution: We know a typical door is about 7 feet tall. The problem says the bookshelf is a little shorter than the door. A reasonable estimate for something a little shorter than 7 feet is about 6 feet.
    Full step-by-step solution

    Step 1: We know a typical door is about 7 feet tall. Step 2: The problem says the bookshelf is a little shorter than the door. Step 3: A reasonable estimate for something a little shorter than 7 feet is about 6 feet. Step 4: So, Isabella's bookshelf is about 6 feet tall. The answer is about 6 feet.

  8. Isabella's jump rope is about how many feet long? Answer: 8 feet Solution: Think about a typical jump rope for a child. It is usually longer than a yardstick (3 feet) but shorter than a car. Step 2: Many jump ropes for kids are around 7 to 9 feet long.
    Full step-by-step solution

    Step 1: Think about a typical jump rope for a child. It is usually longer than a yardstick (3 feet) but shorter than a car. Step 2: Many jump ropes for kids are around 7 to 9 feet long. Step 3: A reasonable estimate is 8 feet, which is a little longer than two yardsticks. The answer is 8 feet.

  9. Noah estimates that his desk is about 31 inches long. About how many inches long is Noah's desk? Answer: 31 inches Solution: Read the problem carefully. Noah estimates the length of his desk. Step 2: The problem tells us his estimate is 'about 31 inches.' Step 3: When we estimate, we give a reasonable guess.
    Full step-by-step solution

    Step 1: Read the problem carefully. Noah estimates the length of his desk. Step 2: The problem tells us his estimate is 'about 31 inches.' Step 3: When we estimate, we give a reasonable guess. The number given in the problem is 31. Step 4: So, the estimated length of Noah's desk is 31 inches. Final answer: 31 inches.