Page 77 - Maths Class 02

She has 724 – 412.

Now, she checks.

H T O H T O

7 2 4 3 1 2
– +
4 1 2 4 1 2

3 1 2 7 2 4

Ruhi add the subtrahend with the difference and

then she gets the same number as minuend.

Example : Subtract 387 from 940 and check your answer.

Solution
H T O H T O
8 3 13 10 1 1
+ 5 5 3
9 4 0
– 3 8 7 3 8 7

5 5 3 9 4 0

Using Strategies –Two–Step Problems

Sometimes you may need to do more than one calculation while solving a
problem. These are called two-step problems .

Mahi posted 70 pictures in her scrapbook.

Riya puts 7 more pictures.

If there is place for 100 pictures, how many more can be put in the scrapbook ?

Step 1 : 7 0 Step 2 : 1 0 0 23 more

pictures can be
+ 7 – 7 7
put in the
7 7 2 3
scrapbook.

Add to find how many
Subtract to find how many more
picture are already in
pictures can be put in the scrapbook.
the scrapbook.

Mathematics-2 77