Adding And Subtracting Whole Numbers And Decimals.pptx

45 + 36 = 81

24 + 59 = 83 58 + 32 = 90

93 - 45 = 48 82 + 27 = 55

71 - 43 = 28

12. 45 + 10. 09 22. 4

9. 550 - 5. 450 4. 1

201. 89 + 198. 54 400. 4

1. 787 + 0.556 2.4

1. 333 - 0. 222 1.1

Edgar put P950.00 into a savings account. After a while, P9.50 is added to it. How much was in the account then?

P 950.00 + 9.50 P 959.50 There was P959.50 in the savings account.

Edgar’s parents have P25,800.00 in a checking account. How much is left in the account after writing checks totalling to P2,375.15?

P 25 800.00 + 2 375. 15 P 22 624. 75 There is P22, 624.75 left in the checking account.

Steps in adding and subtracting decimals. 1. Arrange the numbers in column by aligning the decimal point and the digits that belong to the same value. 2. Add or subtract the digits. 3. Check the answer.

Solve the following:

1. 16 + 15.56 4.

GROUP ACTIVITY

2. 37.21 - 19

285 – 18.295 = ___

5. 98 + 25 + 16.3 = ___

3. 32.587 + 1 9.63

Write in column, then compute.

1.

39 + 18.9 – 15.6 = N

2.

89 – 29.341 + 14 = N

3.

62.5 + 3.96 + 93 = N

4.

30.1 + 120 – 97.639 = N

5.

19.61 – 8.75 + 2.95 = N

Solve the problem. 1) Add 82.839 to the difference of 189 and 158.84. 2) The sum of 15.16, 97 and 68.3 is ____. 3) Add the difference of 25 and 16.82 to the sum of 43 and 18.28.

ASSIGNMEN T: Solve. 1) 89 – 84.63 + 74.13 = N 2) 105.89 – 49 + 29.834 = N 3) What is the answer when 215 is added to 15.398? 4) What is the answer when 612 is added to the difference of 65 and 47.982?