Page 71 - Math Skill - 2

Addition and Subtraction of 3-digit Numbers 69

3-digit number from a 3-digit number

Let us subtract 513 from 786. H T O

Step 1: Write the numbers in columns. 7 8 6

Step 2: Subtract the ones. 6 – 3 = 3 ones – 5 1 3

Write 3 in ones column. 3

H T O

Step 3: Subtract the tens. 8 – 1= 7 tens 7 8 6

Write 7 in tens column. – 5 1 3
7 3

H T O
Step 4: Subtract the hundreds. 7 – 5 = 2 hundreds 7 8 6

Write 2 in hundreds column. – 5 1 3

Thus, 786 – 513 = 273 2 7 3

Subtract the following.

H T O H T O H T O H T O

8 5 6 6 3 4 4 4 3 3 9 2

– 2 1 – 2 1 – 3 2 – 2 3 1

H T O H T O H T O H T O

5 8 6 7 4 4 7 8 3 5 3 6

– 4 7 5 – 2 1 2 – 2 6 0 – 3 2 3