Adding Two-Digit Numbers Concepts

Start with the tens place

Stack the numbers with digits aligned

Use a calculator

Add the numbers directly

To avoid using a calculator

To ensure digits are added in the correct place

To make the addition faster

To make the numbers look neat

Use a calculator

Start with the tens place

Start with the ones place

Add both places simultaneously

7

6

8

5

35

36

37

38

Subtract 10 from the sum

Ignore the extra 10

Carry over 1 to the tens place

Write 12 in the ones place

6

5

4

3

41

42

43

44

To avoid mistakes

To ensure correct carrying over

To make it easier to subtract

To make the addition faster

Subtract 10 from the sum

Ignore the extra

Carry over the extra to the tens place

Write the entire sum in the ones place