Welcome to Year 3 Mathematics
Lessons & Assignments
WEEK 10 SUBTRACTION
(NUMBERS THAT HAVE ZEROS)
Hi children! In this week's topic, we are going to do borrowing with more zeros.
​
Let's watch the videos below:
​
From the videos above, what can we see?
1) When we stop at the ,
it becomes a .
​
2) What about the the last zero digit?
It becomes a .
LAST ZERO DIGIT
10
zeros before
9
Th H T O
5 0 0 0
- 3 6 8
4
9
9
1
4
6
3
2
Step 1 : Look at the Ones (O).
0 is SMALLER THAN 8 (you cannot subtract). Borrow 1 from Thousands (Th). Add the 1 to Ones (O) and subtract.
Step 2 : Subtract the Tens (T)
Step 3 : Subtract the Hundreds (H).
Step 4 : Subtract the Thousands (Th).
MORE EXAMPLES
Th H T O
6 0 0 0
- 8 2 6
5
9
9
1
5
1
7
4
Th H T O
9 0 0 5
- 2 3 4 2
1
6
6
6
3
8
9
Th H T O
7 0 0 3
- 1 9 3 7
6
9
9
1
5
0
6
6
Th H T O
4 0 0 0
- 1 9 9 9
3
9
9
1
2
0
0
1