Presentation.

Fill in the gaps:....

a) 2.5 + 3.9=6.4

-0.1       +0.1

2.4 + 4.0=6.4

b) 4.6 + 1.8=6.4

-0.2     +0.2

4.4 + 2.0=6.4

c) 3.1 + 6.3=9.4

-0.1      +0.1

3.0 + 6.4=9.4

d) 2.8 + 2.5=5.3

+0.2     -0.2

3.0 + 2.3=5.3

e) 4.8 + 6.7=11.5

+0.2      -0.2

6.0 + 6.5=12.5

f) 13.7 + 4.5=18.2

+0.3      -0.3

14.0 + 1.2=15.2

g) 5.8 + 4.6=10.4

+0.2     -0.2

7.0 + 2.4=10.4

h) 9.9 + 4.6=14.5

+0.1     -0.1

10.0 + 3. 5=13.5

i) 6.6 + 8.8=15.4

-0.2     +0.2

4.4 + 10.10=14.5

j) 4.2 + 5.8=10

-0.2     +0.2

2.0 + 7.10=9.1

k) 7.3 + 7.5=14.8

-0.3      +0.3

4.0 + 4. 2=8.2

l) 11.1 + 6.8=17.9

-0.1       +0.1

10.0 + 7.9=17.9

m) 5.8 + 9.3=15.1

+0.2      -0.2

7.0 + 11.5=18.5

n) 7.2 + 8.4=15.6

+0.1     -0.1

8.3 + 7.3=15.6

o) 11.5 + 8.9=20.4

+0.1       -0.1

12.6 + 7.8=20.4

Complete these following activities…

A) 6.5 + 8.1=14.6

B) 9.3 + 7.4=16.7

C) 6.7 + 8.3=15

D) 4.8 + 12.3=17.1

E) 7.7 + 2.6=10.3

F) 12.4 + 12.9=25.3

G) 9.8 + 8.8=18.6

H) 7.3 + 12.4=19.7

I) 15.3 + 3.7=19

3) Word Problem:

1) I have 3.7 meters of rope and I found another 7.8 meters of rope. How much rope do I have have? 11.5

2) Andrew weights 45.6 kilograms and his cat weights 4.8 kilograms. How much do they both weigh in total? 50.4

3) Sarah was 1.3 meters tall but she has grown another 0.3 meters this year. How tall is she now? 1.6

4) An electrician has completed 14.4 meters of wriring a house. He must still do another 13.6 meters of wiring. How much wiring does the house require in total? 28

5) A designer uses 4.6 meters of blue fabric and 12.3 meters of red fabric. How much fabric has she used in total? 16.9

6) To create a long red carpet two carpet are placed together. One is 12.2 meters long and the other is 14.5 meters long. How long is the red carpet in total? 26.7

7) My car has 33.4 liters of petrol in it. I add another 7.5 liters of petrol. How much petrol is in my car now? 40.9

8) Sue drank 1.6 liters of water and another 1.3 liters this afternoon. How much water has she drank? 2.9

9) A paddling pool had 37.3 liters of water in it. I added another 19.8 liters of water. How much water is in it now? 57.1