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Subtract Multiples of 10

Grade 1 · Mathematics · Worksheet 3

  1. Liam had 80 crayons in his box. He gave 30 crayons to his friend Emma. How many crayons does Liam have left? Answer: ______________
  2. There are 90 crayons in a box. If 40 crayons are used for coloring, how many crayons are left in the box? Answer: ______________
  3. A classroom has 8 rows of desks with 10 desks in each row. The teacher removes 4 rows of desks. How many desks are left in the classroom?
    Answer: ______________
  4. A classroom has 8 rows of desks with 10 desks in each row. The teacher removes 4 rows of desks for an activity. How many desks are left in the classroom?
    Answer: ______________
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Answer Key & Explanations

Subtract Multiples of 10 · Grade 1 · Worksheet 3

  1. Liam had 80 crayons in his box. He gave 30 crayons to his friend Emma. How many crayons does Liam have left? Answer: 50 Solution: Liam started with 80 crayons. He gave 30 crayons to Emma, which means he has fewer crayons now. To find how many crayons Liam has left, subtract the crayons he gave away from the crayons he started with.
    Full step-by-step solution

    Liam started with 80 crayons. He gave 30 crayons to Emma, which means he has fewer crayons now. To find how many crayons Liam has left, subtract the crayons he gave away from the crayons he started with. Step 1: Write the subtraction: 80 - 30 Step 2: Subtract the ones: 0 - 0 = 0 Step 3: Subtract the tens: 8 tens - 3 tens = 5 tens Step 4: Combine the result: 5 tens and 0 ones = 50 So, Liam has 50 crayons left.

  2. There are 90 crayons in a box. If 40 crayons are used for coloring, how many crayons are left in the box? Answer: 50 Solution: Start with the total number of crayons: 90 Subtract the crayons that were used: 90 - 40 90 - 40 = 50 There are 50 crayons left in the box.
    Full step-by-step solution

    Step 1: Start with the total number of crayons: 90 Step 2: Subtract the crayons that were used: 90 - 40 Step 3: 90 - 40 = 50 There are 50 crayons left in the box.

  3. A classroom has 8 rows of desks with 10 desks in each row. The teacher removes 4 rows of desks. How many desks are left in the classroom? Answer: 40 Solution: First, find the total number of desks in the classroom. There are 8 rows with 10 desks each, so 8 × 10 = 80 desks. Next, find out how many desks are removed.
    Full step-by-step solution

    Step 1: First, find the total number of desks in the classroom. There are 8 rows with 10 desks each, so 8 × 10 = 80 desks. Step 2: Next, find out how many desks are removed. The teacher removes 4 rows, and each row has 10 desks, so 4 × 10 = 40 desks are removed. Step 3: Finally, subtract the number of desks removed from the total number of desks. 80 - 40 = 40. The answer is 40.

  4. A classroom has 8 rows of desks with 10 desks in each row. The teacher removes 4 rows of desks for an activity. How many desks are left in the classroom? Answer: 40 Solution: Find the total number of desks. There are 8 rows with 10 desks each, so 8 x 10 = 80 desks. Find how many desks are removed.
    Full step-by-step solution

    Step 1: Find the total number of desks. There are 8 rows with 10 desks each, so 8 x 10 = 80 desks. Step 2: Find how many desks are removed. The teacher removes 4 rows with 10 desks each, so 4 x 10 = 40 desks. Step 3: Subtract the removed desks from the total. 80 - 40 = 40 desks. The answer is 40.