Video Transcript
Take away four from 65.
In this question, we have to
subtract a one-digit number from a two-digit number. And we have to use the column
subtraction method. The number we’re taking away from
is 65, which has six 10s and five ones. And we have to subtract four from
this number. Four is a one-digit number, so it
just has a ones digit. So the calculation has already been
written for us, which means we can start subtracting. And we always subtract the ones
first. The number 65 has five ones, and we
need to subtract four ones. This is quite an easy
calculation. Five take away four equals one. Five ones take away four ones
leaves us with one.
Now, all we need to do is subtract
in the tens column. There are six 10s and nothing to
subtract. This is because we’re subtracting a
one-digit number from a two-digit number. Six 10s take away no 10s leaves us
with six 10s. We didn’t need to do any
regrouping. We had enough ones to subtract
from. 65 subtract four is 61. When we subtract a one-digit number
from a two-digit number using column subtraction, first, we have to write out the
calculation. Then we subtract the ones, making
sure to record any regrouping we need to do. Then we subtract the tens. 65 subtract four equals 61.
