Video Transcript
Matthew is subtracting 10s. Eight 10s take away three 10s. Find the missing numbers. Eight 10s take away three 10s is
what 10s. 80 subtract 30 equals what.
In this question, we’re subtracting
a multiple of 10 from a multiple of 10. We know that Matthew has eight 10s,
and he subtracts three 10s. How many 10s does he have left? One, two, three, four, five. Eight 10s take away three 10s is
five 10s. What are five 10s worth? If our number has five 10s and no
ones, the number is 50. Let’s count in 10s to check. 10, 20, 30, 40, 50. 80 subtract 30 equals 50. Eight 10s take away three 10s
equals five 10s. 80 take away 30 equals 50.
