Give the missing number.

+ 36 = 81

58 + = 90

24 + 59 =

Give the missing number

202 + 131 + 34 =

1 589 + 345 =

357 + 242 =

0.429

Read the following decimals:

6.005

0.6405

3.0522 0.3984

Study the diagram below.

0.545 0.328

How far is Pepe’s house from Nelia’s house?

What operation will you use to find the answer?

Step 1 Step 2 Write the

numbers in

column,

align the

decimal

points

Step 3 Add as you would add whole numbers. Add from right to left.

Place the decimal point in the sum in line with the decimal point of the addends.

0.545 + 0.328

0.545 0.328

0.545 0.328

3 7 8 0

1

0 8 7 3 .

16 + 13.56

16 + 13.56

6 5 9 2 .

0.257 + 0.212

0.316 + 0.45

0.587 + 19

5.98 + 25

34 + 13.6

Write in column, then add.

0.257

+ 0.212 0.469

1. 0.587

+ 19 19.587

2.

0.316

+ 0.45 0.766

3. 5.98

+ 25 30.98

4.

34

+ 13.6 47.6

5.

How do you find the sum of

whole numbers and decimals?

1. Write the numbers in column, align

the decimal points.

2. Add from right to left.

3. Place the decimal point in the sum

in line with the decimal point of the

addends.

Find your way out of the woods. Do the process indicated to find your way out.

+

+

+ +

2.248 +

A

B

C

D

E F G

H I J

Find your way out of the woods. Do the process indicated to find your way out.

+

+

+ +

2.248 +

0.795

1.045

1.485

2.809

2.939

14.939 15.171

15.331 17.579 17.802

Write in column, then find the sum.

1. 39 + 18.9 =

2. 0.341 + 14 =

3. 3.96 + 93 =

4. 20.1 + 0.647 =

5. 8 + 2.95 =

39

+ 18.9 57.9

1. 0.341

+ 14 14.341

2.

3.96

+ 93 96.96

3. 20.1

+ 0.647 20.747

4.

8

+ 2.95 10.95

5.

Assignment:

Solve the problems.

1) Add 82.839 and 189.

2) The sum of 15.16, 97 and 68.3 is ____.

3) Add 16.82 to the sum of 43 and 18.28.

4) What is the answer when 215 is added

to 15.398?

5) What is the sum if 47.982 is added to

612?