Page 34 - Maths Skill - 3

32 Maths

Addition without Regrouping
Let us add 3241 and 2137.

Arrange the given numbers in columns and then follow these steps:

Step 1: Add the ones. Step 2: Add the tens.
1 one + 7 ones = 8 ones 4 tens + 3 tens = 7 tens

Write 8 under ones column. Write 7 under tens column.

Th H T O Th H T O
3 2 4 1 3 2 4 1

+ 2 1 3 7 + 2 1 3 7
8 7 8

Step 3: Add the hundreds. Th H T O

2 hundreds + 1 hundred = 3 hundreds 3 2 4 1
+ 2 1 3 7
Write 3 under hundreds column. 3 7 8

Step 4: Add the thousands.
Th H T O
3 thousands + 2 thousands = 5 thousands 3 2 4 1

Write 5 under thousands column. + 2 1 3 7

Thus, 3241 + 2137 = 5378 5 3 7 8

Exercise 3.3

1. Add the following.
(a) Th H T O (b) Th H T O (c) Th H T O

4 3 4 1 1 6 7 2 6 6 5 3
+ 2 5 1 7 + 7 3 0 3 + 2 1 0 4

2. Find the sum of the given numbers.
(a) 4352 + 247 (b) 4303 + 1092 (c) 1234 + 4321

(d) 2614 + 5142 (e) 5521 + 3243 (f) 3051 + 5234