Video Transcript
Which label represents the number
70? Is it A, B, or C?
We don’t know which numbers are
represented by A, B, and C. But the numbers that we can see —
20, 40, and 60 — are all multiples of 10. Which number is 10 more than
20? 10 more than 20 is 30. So we know that A represents the
number 30. Let’s keep counting forward in
10s. 40, 50. So we know that B is 50. The next number is 60. And 10 more than 60 is 70. So C is 70. So the label which represents the
number 70 is C. On this number line, we’re counting
in 10s. 20, 30, 40, 50, 60, 70. The label C represents the number
70.
