In this lesson, we will learn how to subtract either a one-digit number or a two-digit number from a two-digit number using the fact that one ten equals ten ones.
Q1:
Ali is subtracting 8 from 72. He drew this to show 72 as 7 tens and 2 ones.
Find the answer to 72−8 by subtracting 8 ones.
Hint: Try regrouping 1 ten into 10 ones to help.
Q2:
Khalid used place value blocks to show 64 in 6 tens and 4 ones.
He wants to take away 6 from 64. But there are not enough ones.
Pick another way he could make 64 so he can take away 6 ones.
Take away 6 ones to find 64−6.
Q3:
A car park has 41 spaces. Two spaces are taken. How many are left?
Hint: Use a model to help you regroup and subtract.
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