Page 2 - Lesson Note - 2

ADDITION WITHOUT REGROUPING

Learning objectives: Students will learn to add 3 and 4 digit numbers without carryover.

 When things are put together, we do addition.
 When some numbers are added, each number is called an addend.
 The result obtained after addition is called their sum.

2341 + 4128 = 6469

(addend) plus sign (addend) equal sign (sum)

 Addition without carrying: Step 1: Arrange the digits of the given numbers in columns of
thousands, hundreds, tens and ones.

Step 2: Add columnwise.

First add the ones, then add the tens, followed by the hundreds and finally add the thousands.

Example: Add 4461 and 1237

Explanation: Adding ones: 1one+7 ones=8ones
Th H T O
Adding tens: 6 tens+3 tens= 9tens 4 4 6 1
+ 1 2 3 7
Adding hundreds: 4 hundreds+2hundred=6hundreds
= 5 6 9 8
Adding thousands: 4 thousands+1 thousand=5 thousands

LEARNING OUTCOME: students are able to add 3 and 4 digit numbers without carryover.