Compare Measurements

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Answer Key & Explanations

Compare Measurements · Grade 2 · Worksheet 3

1. Noah collected 68 seashells at the beach in the morning. In the afternoon, he found 24 more seashells. How many seashells did Noah collect in total? Answer: 92 seashells Solution: Noah started with 68 seashells. He found 24 more seashells.
   Full step-by-step solution

   Step 1: Noah started with 68 seashells. Step 2: He found 24 more seashells. Step 3: Add the two amounts together: 68 + 24 Step 4: First add the ones: 8 + 4 = 12 (write down 2, carry over 1 to the tens place) Step 5: Then add the tens: 6 + 2 + 1 (the carried over 1) = 9 Step 6: Combine the tens and ones: 90 + 2 = 92 The answer is 92 seashells.

2. Sophia has a 75-centimeter jump rope. Ava has a 1-meter jump rope. Whose jump rope is longer? Answer: Ava's jump rope is longer Solution: Remember that 1 meter is equal to 100 centimeters. Sophia's jump rope is 75 centimeters long. Ava's jump rope is 1 meter long, which is 100 centimeters.
   Full step-by-step solution

   Step 1: Remember that 1 meter is equal to 100 centimeters. Step 2: Sophia's jump rope is 75 centimeters long. Step 3: Ava's jump rope is 1 meter long, which is 100 centimeters. Step 4: Compare the lengths in centimeters: 75 cm and 100 cm. Step 5: Since 100 cm is greater than 75 cm, Ava's jump rope is longer. The answer is Ava's jump rope is longer.

3. Noah has 52 crayons in his art box. He finds 37 more crayons in his backpack. How many crayons does Noah have in total? Answer: 89 crayons Solution: Noah starts with 52 crayons in his art box. He finds 37 more crayons in his backpack.
   Full step-by-step solution

   Step 1: Noah starts with 52 crayons in his art box. Step 2: He finds 37 more crayons in his backpack. Step 3: Add the two amounts together: 52 + 37 Step 4: First add the ones: 2 + 7 = 9 Step 5: Then add the tens: 50 + 30 = 80 Step 6: Combine the results: 80 + 9 = 89 Noah has 89 crayons in total.

4. 35 + 47 = ? Answer: 82 Solution: Write the numbers vertically in your mind (or on paper): 35 + 47 Start by adding the digits in the ones column (rightmost column): 5 + 7 = 12 Since 12 is a two-digit number, we split it: 12 = 10 + 2 Write down the 2 in the ones place of the answer, and carry over the 1 (from 10) to the tens column.
   Full step-by-step solution

   Let's add 35 and 47 step-by-step. Step 1: Write the numbers vertically in your mind (or on paper): 35 + 47 Step 2: Start by adding the digits in the ones column (rightmost column): 5 + 7 = 12 Step 3: Since 12 is a two-digit number, we split it: 12 = 10 + 2 Step 4: Write down the 2 in the ones place of the answer, and carry over the 1 (from 10) to the tens column. Step 5: Now add the digits in the tens column, including the carried-over 1: 3 + 4 + 1 = 8 Step 6: Write the 8 in the tens place of the answer. Step 7: Combine the tens and ones digits: The answer is 82. Final check: 35 + 47 = 82.

5. Noah collected 32 seashells at the beach in the morning. In the afternoon, he found 15 more seashells. How many seashells did Noah collect in total? Answer: 47 seashells Solution: Noah started with 32 seashells from the morning. He found 15 more seashells in the afternoon.
   Full step-by-step solution

   Step 1: Noah started with 32 seashells from the morning. Step 2: He found 15 more seashells in the afternoon. Step 3: Add the two amounts together: 32 + 15 Step 4: First add the ones: 2 + 5 = 7 Step 5: Then add the tens: 30 + 10 = 40 Step 6: Combine the results: 40 + 7 = 47 Noah collected 47 seashells in total.

6. Noah has 68 marbles in his collection. His friend Lily gives him 25 more marbles. How many marbles does Noah have now? Answer: 93 marbles Solution: Noah starts with 68 marbles Lily gives him 25 more marbles Add the ones place: 8 + 5 = 13 (write down 3, carry over 1 to tens place) Add the tens place: 6 + 2 + 1 (carried over) = 9 Combine the tens and ones: 90 + 3 = 93 Noah has 93 marbles in total.
   Full step-by-step solution

   Step 1: Noah starts with 68 marbles Step 2: Lily gives him 25 more marbles Step 3: Add the ones place: 8 + 5 = 13 (write down 3, carry over 1 to tens place) Step 4: Add the tens place: 6 + 2 + 1 (carried over) = 9 Step 5: Combine the tens and ones: 90 + 3 = 93 Noah has 93 marbles in total.

7. A square picture frame has sides that are each 24 centimeters long. What is the total distance around the frame? Answer: 96 centimeters Solution: A square has 4 equal sides. Each side is 24 centimeters long.
   Full step-by-step solution

   Step 1: A square has 4 equal sides. Step 2: Each side is 24 centimeters long. Step 3: To find the total distance around, add all four sides: 24 + 24 + 24 + 24 Step 4: Calculate: 24 + 24 = 48, 48 + 24 = 72, 72 + 24 = 96 Step 5: The total distance around is 96 centimeters.

8. A farmer has 45 apples in one basket and 38 apples in another basket. How many more apples are in the first basket than in the second basket? Answer: 7 apples Solution: We are comparing two quantities: the apples in the first basket and the apples in the second basket. The first basket has 45 apples. The second basket has 38 apples.
   Full step-by-step solution

   Step 1: Understand the problem. We are comparing two quantities: the apples in the first basket and the apples in the second basket. The first basket has 45 apples. The second basket has 38 apples. Step 2: Determine what is being asked. The problem asks: "How many more apples are in the first basket than in the second basket?" This means we need to find the difference between the larger number (first basket) and the smaller number (second basket). Step 3: Write the subtraction. Difference = Apples in first basket − Apples in second basket Difference = 45 − 38 Step 4: Perform the subtraction. Start with the ones place: 5 − 8 cannot be done without regrouping. Regroup 45 as 30 + 15 instead of 40 + 5. Now subtract: 15 − 8 = 7. Then subtract the tens: 3 (from 30 after regrouping) − 3 (from 38) = 0. So the result is 7. Step 5: State the answer in context. There are 7 more apples in the first basket than in the second basket. Final answer: 7 apples