Video Transcript
Use a number line to find 50 more
than 22. Hint: Count in 10s.
In this question, we have to use
the number line to find 50 more than 22. And we’re told to count in 10s. The number 22 has already been
marked on the number line. 22 is a two-digit number. It has two 10s and two ones. We’re adding 50 to the number
22. The number 50 is a multiple of
10. There are five 10s in the number 50
and no ones. 22 has two 10s. And we have to add five more
10s. 10, 20, 30, 40, 50.
Did you notice what happened to the
two digits as we counted forward five 10s on the number line? 22, 32, 42, 52, 62, 72. The tens digit increased, but the
ones digit stayed the same. We had two 10s, and we counted
forward five more 10s. Two plus five is seven, so two 10s
plus five 10s is seven 10s. The tens digit increased by
five. 50 more than 22 is 72. We started at number 22 on the
number line, and we counted forward in 10s. 22 and five more 10s is 72.
