Skip Counting Introduction — Answer Key
Part A: Multiple Choice
Circle the best answer for each question.
1. What number comes after 30 when counting by 10s?
A) 40
B) 31
C) 35
D) 50
Thirty plus ten equals forty, the next number when skip counting by tens.
2. Which list shows correct skip counting by 10s?
A) 10, 15, 20, 25
B) 10, 20, 30, 40
C) 2, 4, 6, 8
D) 5, 10, 15, 20
Ten, twenty, thirty, forty each grow by ten, so this is correct skip counting by tens.
3. How many groups of 10 make 50 when skip counting?
A) 3 groups
B) 4 groups
C) 5 groups
D) 6 groups
Saying ten, twenty, thirty, forty, fifty uses five groups, so the answer is five.
4. Which method is best for counting 10 piles of 10 pennies?
A) Count by 1s
B) Count by 2s
C) Count by 5s
D) Count by 10s
Counting by tens fits because each pile has ten, making the total reach one hundred fast.
Part B: Fill in the Blank
Write the correct answer on each line.
1. 10, 20, 30, 40
Twenty plus ten equals thirty, the next number when skip counting by tens.
2. 50, 60, 70, 80
Seventy plus ten equals eighty, continuing our skip count by tens.
3. 10, 20, 30, 40
Going back ten from twenty gives ten, the first number when skip counting by tens.
4. 70, 80, 90, 100
Eighty plus ten equals ninety, fitting between eighty and one hundred perfectly.
5. 30, 40, 50, 60
Fifty plus ten equals sixty, the next number when skip counting by tens.