What number does this pattern skip-count by: 30, 40, 50, 60?
- By 100s
- By 1s
- By 10s (correct answer)
- By 5s
Explanation: Each number in the pattern is 10 more than the last, so the pattern counts by 10s. Choice A, by 100s, is far too large a jump for this pattern. Choice B, by 1s, is far too small a jump. Choice D, by 5s, does not match the difference of 10 between each number.