1. copyright@Ed2netLearning,Inc1 ADDING AND SUBTRACTING DECIMALS (1) GRADE 3

2. copyright@Ed2netLearning,Inc2 Hello, How are you doing? Today, we are going to start a new lesson on Decimals.

3. copyright@Ed2netLearning,Inc3 Decimal A number that uses place value and Decimal point to show tenths and hundredths. Example – 0.53, 0.86 Places in each Decimal – There are two places in each of the decimal given below. Example – 0.32, 0.47

4. copyright@Ed2netLearning,Inc4 Add Decimals using Models Step 1: Use one color to shade the first addend. Step 2: Use different color to shade the other addend. Step 3: In the place value chart, write the total amount.

5. copyright@Ed2netLearning,Inc5 To add 0.52 + 0.23 0.52 + 0.23 = 0.75

6. copyright@Ed2netLearning,Inc6 Steps to add decimals.  Line up the decimal points.  Start with the hundredths, then tenths and add each place.  Regroup if needed.  Place the decimal point between the ones and the tenths.

7. copyright@Ed2netLearning,Inc7 Add 1.4 + 0.2 Line up the decimal points and add each place value. 1.4 1.4 1.4 + 0.2 +0.2 + 0.2 Thus, 1.4 + 0.2 = 1.6

8. copyright@Ed2netLearning,Inc8 Find 1.41 + 0.98 1.41 + 0.98 2.39

9. copyright@Ed2netLearning,Inc9 Peter spend $4.26 for the lunch. Roger spend $6.25 for the lunch. How much did they spend altogether?

10. copyright@Ed2netLearning,Inc10 Add 2.67 and 2.56 on a chart Ones.Tenthshundredths 11 2.67 +2.56 1213 5.23

11. copyright@Ed2netLearning,Inc11 Add 2.36 + 1.02 + 0.3

12. copyright@Ed2netLearning,Inc12 Which is true about 1.4 + 2.6 a) 1.4 +2.6 b) 1.4 + 2.6 c) 1.4 + 2.0 d) 1.4 +0.26

13. copyright@Ed2netLearning,Inc13 Find the sum of the decimal numbers shown in the grid.

14. copyright@Ed2netLearning,Inc14 Regrouping Regrouping is required if there are more than 9 tenths in the tenths place. In case of regrouping, put 1 over the ones in the addend. 11 tenths can be regrouped to 1 one and 1 tenths.

15. copyright@Ed2netLearning,Inc15 Which among the following is greater than 1? a) 0.23 + 0.56 b) 0.25 +0.45 c) 0.14 + 0.96 d) 0.26 +0.09

16. copyright@Ed2netLearning,Inc16 Which is correct? a) 1.56 + 2.69 = 42.5 b) 1.56 + 2.69 = 4.25 c) 1.56 + 2.69 = 425 d) 1.56 + 2.69 =0.425

17. copyright@Ed2netLearning,Inc17 ASSESSMENT

18. copyright@Ed2netLearning,Inc18 1.Add 5.36 + 1.25

19. copyright@Ed2netLearning,Inc19 2.At a store, Peter buys a juice can for $2.69 and a pack of paper clips for $0.84. How much did he spend in all?

20. copyright@Ed2netLearning,Inc20 3.Peter saved $4.25. Alex saved $1.63 more than Peter. How much did Alex save?

21. copyright@Ed2netLearning,Inc21 4.Diana drove 4.20 Kilometer from her home to office and drove the same distance back. How much did she drive in all?

22. copyright@Ed2netLearning,Inc22 5.Serene buys a book on music. It costs $4.05. How much does he spend for 2 of these books?

23. copyright@Ed2netLearning,Inc23 6.Choose the right answer for the sum. 7.56+ 9.62 a) 7.18 b) 171.8 c) 1.718 d) 17.18

24. copyright@Ed2netLearning,Inc24 7.Irene and her two friends went for a movie. Each ticket to the movie was $5.25. They spend a total of $3.26 on popcorn. How much did they spend in all?

25. copyright@Ed2netLearning,Inc25 8.Ronald saved $4.50. His mother gave $1.20. How much does he have now?

26. copyright@Ed2netLearning,Inc26 9.The height of the Tomato plant was 1.25 inches last week. It grew 0.23 inches this week. How tall is Tomato Plant now?

27. copyright@Ed2netLearning,Inc27 10.Alan and Juliet spend $4.35 on lunch each. How much did they spend in all?

28. copyright@Ed2netLearning,Inc28 Recap Decimals Add decimals using Models Steps to add decimal Regrouping Solved Examples Unsolved Problems

29. copyright@Ed2netLearning,Inc29 Well Done! Now Practice worksheets on the Lesson.