Skip Counting

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Answer Key & Explanations

Skip Counting · Grade 2 · Worksheet 1

1. Olivia is organizing her collection of colored pencils. She puts them into boxes that hold 5 pencils each. If Olivia fills 9 boxes completely, how many colored pencils does she have in total? Answer: 45 Solution: Olivia has 9 boxes of colored pencils. Step 2: Each box holds 5 pencils. Step 3: To find the total, skip count by 5s nine times: 5, 10, 15, 20, 25, 30, 35, 40, 45.
   Full step-by-step solution

   Step 1: Olivia has 9 boxes of colored pencils. Step 2: Each box holds 5 pencils. Step 3: To find the total, skip count by 5s nine times: 5, 10, 15, 20, 25, 30, 35, 40, 45. Step 4: The total number of pencils is 45. The answer is 45.

2. Skip count by 5s: 37, 47, __, 67 Answer: 57 Solution: The pattern is skip counting by 5s, so we add 5 to each number to get the next. Step 2: Start at 47. Step 3: 47 + 5 = 52.
   Full step-by-step solution

   Step 1: The pattern is skip counting by 5s, so we add 5 to each number to get the next. Step 2: Start at 47. Step 3: 47 + 5 = 52. Step 4: 52 + 5 = 57. The missing number is 57.

3. Skip count by 5s: 80, 85, 90, __, 100 Answer: 95 Solution: The pattern is skip counting by 5s, so each number is 5 more than the previous one. Start at 80. Add 5: 80 + 5 = 85.
   Full step-by-step solution

   Step 1: The pattern is skip counting by 5s, so each number is 5 more than the previous one. Step 2: Start at 80. Add 5: 80 + 5 = 85. Step 3: Add 5 again: 85 + 5 = 90. Step 4: Add 5 again: 90 + 5 = 95. Step 5: Check: 95 + 5 = 100, which matches the last number given. The missing number is 95.

4. Look at the pattern: 25, 30, 35, 40, 45, 50. What number comes next in this sequence? Answer: 55 Solution: Look at the pattern: 25, 30, 35, 40, 45, 50 Find the difference between numbers: 30 - 25 = 5, 35 - 30 = 5, 40 - 35 = 5 The pattern is counting by 5s The last number is 50, so add 5: 50 + 5 = 55 The next number in the sequence is 55
   Full step-by-step solution

   Step 1: Look at the pattern: 25, 30, 35, 40, 45, 50 Step 2: Find the difference between numbers: 30 - 25 = 5, 35 - 30 = 5, 40 - 35 = 5 Step 3: The pattern is counting by 5s Step 4: The last number is 50, so add 5: 50 + 5 = 55 Step 5: The next number in the sequence is 55

5. Kaia is saving up to buy a new kite. She saves $5 each week. After 7 weeks, how much money has Kaia saved in total? Answer: 35 Solution: Kaia saves $5 each week for 7 weeks. Count by 5s seven times: 5, 10, 15, 20, 25, 30, 35. After counting seven jumps of 5, we land on 35.
   Full step-by-step solution

   Step 1: Kaia saves $5 each week for 7 weeks. Step 2: Count by 5s seven times: 5, 10, 15, 20, 25, 30, 35. Step 3: After counting seven jumps of 5, we land on 35. Step 4: So, Kaia has saved $35 in total. The answer is 35.

6. A classroom has desks arranged in 6 rows. Each row has 10 desks. How many desks are there in total? Answer: 60 Solution: There are 6 rows of desks. Each row has 10 desks. To find the total, count by tens 6 times: 10, 20, 30, 40, 50, 60.
   Full step-by-step solution

   Step 1: There are 6 rows of desks. Step 2: Each row has 10 desks. Step 3: To find the total, count by tens 6 times: 10, 20, 30, 40, 50, 60. Step 4: 10 + 10 + 10 + 10 + 10 + 10 = 60. The answer is 60.

7. A classroom has desks arranged in 8 rows. Each row has 5 desks. How many desks are in the classroom? Answer: 40 Solution: There are 8 rows of desks. Each row has 5 desks. To find the total, count by fives: 5, 10, 15, 20, 25, 30, 35, 40.
   Full step-by-step solution

   Step 1: There are 8 rows of desks. Step 2: Each row has 5 desks. Step 3: To find the total, count by fives: 5, 10, 15, 20, 25, 30, 35, 40. Step 4: After counting 8 times, we reach 40. The answer is 40.

8. 35 + 45 + 55 = ? Answer: 135 Solution: Start with 35 + 45 35 + 45 = 80 Add 55 to 80 80 + 55 = 135 The answer is 135.
   Full step-by-step solution

   Step 1: Start with 35 + 45 Step 2: 35 + 45 = 80 Step 3: Add 55 to 80 Step 4: 80 + 55 = 135 The answer is 135.

9. Mason is helping his grandmother organize her sewing buttons. She asks him to put the buttons into jars so that each jar has exactly 10 buttons. Mason fills 7 jars completely. How many buttons does Mason organize in total? Answer: 70 Solution: Mason fills 7 jars, and each jar has 10 buttons. Step 2: To find the total number of buttons, count by 10s seven times: 10, 20, 30, 40, 50, 60, 70. Step 3: 7 groups of 10 equals 70.
   Full step-by-step solution

   Step 1: Mason fills 7 jars, and each jar has 10 buttons. Step 2: To find the total number of buttons, count by 10s seven times: 10, 20, 30, 40, 50, 60, 70. Step 3: 7 groups of 10 equals 70. The answer is 70.