Page 82 - Revised Maths Wisdom Class - 1

80 MATHS

We have learned to add one-digit numbers. Let us now learn to add two digit
numbers. We follow these steps:

Step 1: Write the numbers in column form.

Step 2: Write the numbers in expanded form.

Step 3: Add ones and then add tens.

Let us add 62 and 23.

T O

6 2 = 6 tens + 2 ones
+ 2 3 = 2 tens + 3 ones

8 tens + 5 ones = 85

Let us add 24 and 43.

T O
2 4 = 2 tens + 4 ones

+ 4 3 = 4 tens + 3 ones
6 tens + 7 ones = 67

Let us add 64 and 35.

T O
6 4 = 6 tens + 4 ones
+ 3 5 = 3 tens + 5 ones

9 tens + 9 ones = 99

Add the following.

T O

1 8 = tens + ones

+ 2 1 = tens + ones

tens + ones =