Page 35 - Math 4

Fundamental Operations Fundamental Operations

5. Let's fill in the blanks of each crossword puzzle to make the addition
and subtraction equations true.

8 + = 18 – 25 = 75

+ –
+ 5 = – 20 =

= =

13 + 32 =

Quiz Time!

6. a) The sum of two numbers is 12 and the difference 10 + 2 and 10 – 2, no!
9 + 3 and 9 – 3, no!
is 2. The numbers are and 8 + 4 and 8 – 4, no!
7 + 5 and 7 – 5, yes!
b) The difference of two number is 5 and their

sum is 25. The numbers are and

7. a) When a number is added to 6, the sum is 14. The number is

b) When a number is added to 12, the sum is 17. The number is
c) When a number is subtracted from 18, the difference is 8.

The number is

d) The difference of 9 and a number is 7. The number is

8. a) What should be added to 5 to get 13? Interesting Rs 10
is less than Rs 50
b) What should be subtracted from 20 to get 15?
by 50 – 10 = Rs 40
9. a) By how much is Rs 10 less than Rs 50?

b) By how much is 35 kg more than 25 kg?
Adding and regrouping!

Let's add and regroup into the higher places.

10. a) 6 ones + 9 ones = 15 ones = 1 ten and 5 ones
=
+
b) 4 ones + 7 ones = =

c) 8 ones + 5 ones = =
d) 9 ones + 9 ones = =
33
33
Ex
edanta
v
c
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l in Mathematics - Book 4
Approved by Curriculum Development Centre, Sanothimi, Bhaktapur vedanta Excel in Mathematics - Book 4