Tamilnadu Samacheer Kalvi 4th Maths Solutions Term 1 Chapter 3 Patterns Ex 3.2

 

Tamilnadu Samacheer Kalvi 4th Maths Solutions

 Term 1

Chapter 3

Patterns Ex 3.2

Question 1.

Circle the multiples of 9 (by using casting out nine)

(a) 9443

(b) 1008

(c) 24689

(d) 23769

(e) 13476

Answer:

(a) 9443

= 9443

= 4 + 4 + 3 = 11

= 9 – 11

= 2 ( not multiple by 9)

(b) 1008

= 1008

1 + 8 = 9

9 – 9 = 0 (multiple of 9)

(c) 24689

= 24689

= 2 + 4 + 6 + 8 = 20

20 = 2 + 0 = 2 ( not multiple by 9)

(d) 23769

23769

7 + 2 = 9

6 + 3 = 9

9 – 9 = 0 (multiple of 9)

(e) 13476

= 13476

1 + 4 + 7 = 12

1 + 2 = 3 ( not multiple by 9)

Question 2.

Circle the correct addition fact (by using casting out nine).

(a) 4355 + 5369 = 9724

(b) 7632 + 2213 = 9845

(c) 6023 + 3203 = 9220

(d) 2436 + 5315 = 7701

Answer:

(b) 7632 + 2213 = 9845

= 7632 + 2213 = 9845

0 + 8 = 8

8 = 8

Question 13.

Circle the correct subtraction fact (by using casting out nine).

(a) 7420 – 3625 = 3795

(b) 2362 – 632 = 1720

(c) 6732 – 4361= 2371

(d) 3264 – 1063 = 2200

Answer:

(a) 7420 – 3625 = 3795

7420 – 3625 = 3795

4 – 7 = 15

4 = 15 + 7

4 = 6 + 7

4 = 13

4 = 4

(c) 6732 – 4361= 2371

6732 – 4361= 2371

9 – 5 = 13

4 = 4

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