The document provides steps and examples for adding, subtracting, and multiplying decimals. It includes examples of aligning the decimal points and adding placeholders when necessary. It demonstrates multiplying decimals by lining up decimal points and placeholders. The document also includes word problems involving adding, subtracting, and multiplying decimals. Finally, it expresses appreciation for the reader's time.

1. Topic 1
Use Positive Rational
Numbers

2. Lesson 1-1
Fluently Add, Subtract
and Multiply Decimals

3. 3

4. 4

5. 5.9
+ 2.7
4.01
- 2.95
1 11
3 9
1.06
.6
8
Page 12
Step 1: Line up decimal points
Step 2: Place holder 0
Step 3: add or subtract

6. 6.80
- 1.45
5.35
9.62
- 0.30
9.32
Page 12
Step 1: Line up decimal points
Step 2: Place holder 0
Step 3: add or subtract

7. 1.37 8.46 18.21
6.985 4.62 27.185
0.051 23.8 26.89
Page 13
Step 1: Line up decimal points
Step 2: Place holder 0
Step 3: add or subtract

8. 0.5
× 7
3.5
12
× 𝟎. 𝟎𝟖
0.96
24
× 𝟎. 𝟏𝟕
1.68
+ 2.40
4.08
Page 13
Step 1: Line up decimal points
Step 2: Place holder 0
Step 3: add or subtract

9. 0.068 0.874
Page 13
Step 1: Line up decimal points
Step 2: Place holder 0
Step 3: add or subtract

10. 10

11. a) 376 b) 3.76 c) 37.6

12. a) 24.35 b) 2435 c) 2.435 d) 243.5

13. a) 2312 b) 231.2 c) 2.312 d) 23.12

14. a) 0.312 b) 31.2 c) 3.12 d) 312.0

15. a) 1.98 b) 19.8 c) 0.198 d) 198.0

16. a) 108 b) 10.8 c) 0.108

17. 3.76 2.435
23.12 0.312
0.198 10.8
Page 12

18. 9.25 × 42 = 388.5

19. 23.1 – 5.86 = 17.24
52 × 35.5 = 1846
Page 14

20. Page 14 Q 39
Total of the 3 items: 63.99
63.99 – 50 = 13.99
13.99 + 6.01= 20

21. 21

22. Thank you !
Enjoy the rest of
your day