Students can download 4th Maths Term 1 Chapter 3 Patterns Ex 3.2 Questions and Answers, Notes, Samacheer Kalvi 4th Maths Guide Pdf helps you to revise the complete Tamilnadu State Board New Syllabus, helps students complete homework assignments and to score high marks in board exams.
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 (no)
(b) 1008
= 1008
1 + 8 = 9
9 – 9 = 0 (multiple of 9)
(c) 24689
= 24689
= 2 + 4 + 6 + 8 = 20
20 = 2 + 0 = 2 (no)
(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 (no)
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