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Add Three Numbers

Grade 1 · Mathematics · Worksheet 2

  1. 6 + 5 + 4 = ? Answer: ______________
  2. Liam collected 8 shells at the beach in the morning. In the afternoon, he found 5 more shells. Then his sister gave him 2 shells from her collection. How many shells does Liam have in total? Answer: ______________
  3. Emma has 6 stickers. Her friend Mia gives her 4 more stickers. Then Emma's teacher gives her 3 more stickers for good work. How many stickers does Emma have now? Answer: ______________
  4. Sophia has 8 red crayons, 7 blue crayons, and 6 green crayons. How many crayons does Sophia have in all? Answer: ______________
  5. 9 + 8 + 3 = ? Answer: ______________
  6. Aroha has 9 toy dinosaurs. Her friend Tane gives her 4 more toy dinosaurs. Then her cousin Kaia gives her 3 more toy dinosaurs. How many toy dinosaurs does Aroha have now? Answer: ______________
  7. Emma has 6 stickers. Her friend Noah gives her 4 more stickers. Then Emma's teacher gives her 3 more stickers. How many stickers does Emma have now? Answer: ______________
  8. 2 + 7 + 3 = ? Answer: ______________
  9. There are 4 red apples in a row, 3 green apples in the next row, and 2 yellow apples in the last row. How many apples are there in all? Answer: ______________
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Answer Key & Explanations

Add Three Numbers · Grade 1 · Worksheet 2

  1. 6 + 5 + 4 = ? Answer: 15 Solution: Add the first two numbers: 6 + 5 = 11 Add the third number to the result: 11 + 4 = 15 The answer is 15.
    Full step-by-step solution

    Step 1: Add the first two numbers: 6 + 5 = 11 Step 2: Add the third number to the result: 11 + 4 = 15 The answer is 15.

  2. Liam collected 8 shells at the beach in the morning. In the afternoon, he found 5 more shells. Then his sister gave him 2 shells from her collection. How many shells does Liam have in total? Answer: 15 Solution: Liam started with 8 shells from the morning. He found 5 more shells in the afternoon: 8 + 5 = 13 His sister gave him 2 more shells: 13 + 2 = 15 Liam has 15 shells in total.
    Full step-by-step solution

    Step 1: Liam started with 8 shells from the morning. Step 2: He found 5 more shells in the afternoon: 8 + 5 = 13 Step 3: His sister gave him 2 more shells: 13 + 2 = 15 Liam has 15 shells in total.

  3. Emma has 6 stickers. Her friend Mia gives her 4 more stickers. Then Emma's teacher gives her 3 more stickers for good work. How many stickers does Emma have now? Answer: 13 Solution: Emma starts with 6 stickers Mia gives her 4 more stickers: 6 + 4 = 10 Her teacher gives her 3 more stickers: 10 + 3 = 13 Emma has 13 stickers in total The answer is 13.
    Full step-by-step solution

    Step 1: Emma starts with 6 stickers Step 2: Mia gives her 4 more stickers: 6 + 4 = 10 Step 3: Her teacher gives her 3 more stickers: 10 + 3 = 13 Step 4: Emma has 13 stickers in total The answer is 13.

  4. Sophia has 8 red crayons, 7 blue crayons, and 6 green crayons. How many crayons does Sophia have in all? Answer: 21 Solution: Start with the red crayons: 8 Add the blue crayons: 8 + 7 = 15 Add the green crayons: 15 + 6 = 21 Sophia has 21 crayons in all.
    Full step-by-step solution

    Step 1: Start with the red crayons: 8 Step 2: Add the blue crayons: 8 + 7 = 15 Step 3: Add the green crayons: 15 + 6 = 21 Sophia has 21 crayons in all. The answer is 21.

  5. 9 + 8 + 3 = ? Answer: 20 Solution: Look for numbers that add to 10. 9 + 8 = 17 Add the remaining number: 17 + 3 = 20 The answer is 20.
    Full step-by-step solution

    Step 1: Look for numbers that add to 10. 9 + 8 = 17 Step 2: Add the remaining number: 17 + 3 = 20 The answer is 20.

  6. Aroha has 9 toy dinosaurs. Her friend Tane gives her 4 more toy dinosaurs. Then her cousin Kaia gives her 3 more toy dinosaurs. How many toy dinosaurs does Aroha have now? Answer: 16 Solution: Aroha starts with 9 toy dinosaurs. Tane gives her 4 more: 9 + 4 = 13 Kaia gives her 3 more: 13 + 3 = 16 Aroha has 16 toy dinosaurs in total.
    Full step-by-step solution

    Step 1: Aroha starts with 9 toy dinosaurs. Step 2: Tane gives her 4 more: 9 + 4 = 13 Step 3: Kaia gives her 3 more: 13 + 3 = 16 Aroha has 16 toy dinosaurs in total.

  7. Emma has 6 stickers. Her friend Noah gives her 4 more stickers. Then Emma's teacher gives her 3 more stickers. How many stickers does Emma have now? Answer: 13 Solution: Emma starts with 6 stickers Noah gives her 4 more stickers: 6 + 4 = 10 Her teacher gives her 3 more stickers: 10 + 3 = 13 The answer is 13.
    Full step-by-step solution

    Step 1: Emma starts with 6 stickers Step 2: Noah gives her 4 more stickers: 6 + 4 = 10 Step 3: Her teacher gives her 3 more stickers: 10 + 3 = 13 The answer is 13.

  8. 2 + 7 + 3 = ? Answer: 12 Solution: Add the first two numbers: 2 + 7 = 9 Add the third number to the result: 9 + 3 = 12 The answer is 12.
    Full step-by-step solution

    Step 1: Add the first two numbers: 2 + 7 = 9 Step 2: Add the third number to the result: 9 + 3 = 12 The answer is 12.

  9. There are 4 red apples in a row, 3 green apples in the next row, and 2 yellow apples in the last row. How many apples are there in all? Answer: 9 Solution: Identify the number of apples in each row. - First row: 4 red apples. - Second row: 3 green apples.
    Full step-by-step solution

    Step 1: Identify the number of apples in each row. - First row: 4 red apples. - Second row: 3 green apples. - Third row: 2 yellow apples. Step 2: Add the apples from all rows together. Start with the first row: 4 apples. Add the second row: 4 + 3 = 7 apples. Add the third row: 7 + 2 = 9 apples. Step 3: State the final total. There are 9 apples in all.