BASIC 1 MATHEMATICS QUESTION 8

Strand 1:  NUMBER

Sub-Strand 1:  Number: Counting, Representation, Cardinality & Ordinality
CONTENT STANDARDS 1: Describe numbers and the relationship between numbers 0 to 100
INDICATORS AND EXEMPLARS 1: Use number names, counting sequences and how to count to find out “how many?”
 
E.g. 1.  Count by 1s (forwards and backwards) between two given numbers between 0 and 100; or by 2s and 10s; Identify and correct errors or omissions in counting or skip counting sequences 
 
-Skip count forward by 10s
 
QUESTION 8
 
Add by skip counting forward by 10s
 
1. 20 + 10 + 10 + 10 =

2. 30 + 10 + 10 + 10 + 10 =

3. 40 + 10 + 10 + 10 + 10 =

4. 50 + 10 + 10 + 10 + 10 =

5. 70 + 10 + 10 + 10 + 10 =

6. 90 + 10 + 10 =

7. 80 + 10 + 10 + 10 + 10 =

8. 100 + 10 + 10 + 10 =

9. 120 + 10 + 10 =

10. 130 + 10 + 10 + 10 =
 
Let change the beginning figures.
 
Example:
12 + 10 + 10 = 32
 

Now solve the questions below 11 - 20

11. 15 + 10 + 10 + 10 =

12. 19 + 10 + 10 =

13. 33 + 10 + 10 + 10 =

14. 42 + 10 + 10 + 10 =

15. 45 + 10 + 10 + 10 + 10 =

16. 71 + 10 + 10 + 10 =

17. 84 + 10 + 10 + 10 =

18. 126 + 10 + 10 + 10 =

19. 143 + 10 + 10 + 10 =

20. 157 + 10 + 10 + 10 + 10 =
 

1. 20 + 10 + 10 + 10 = 50

2. 30 + 10 + 10 + 10 + 10 = 70

3. 40 + 10 + 10 + 10 + 10 = 80

4. 50 + 10 + 10 + 10 + 10 = 90

5. 70 + 10 + 10 + 10 + 10 = 100

6. 90 + 10 + 10 = 110

7. 80 + 10 + 10 + 10 + 10 = 120

8. 100 + 10 + 10 + 10 = 130

9. 120 + 10 + 10 = 140

10. 130 + 10 + 10 + 10 = 160

Let change the beginning figures.

Example: 12 + 10 + 10 = 32

11. 15 + 10 + 10 + 10 = 45

12. 19 + 10 + 10 = 39

13. 33 + 10 + 10 + 10 = 63

14. 42 + 10 + 10 + 10 = 72

15. 45 + 10 + 10 + 10 + 10 = 85

16. 71 + 10 + 10 + 10 = 101

17. 84 + 10 + 10 + 10 = 114

18. 126 + 10 + 10 + 10 = 156

19. 143 + 10 + 10 + 10 = 173

20. 157 + 10 + 10 + 10 + 10 = 197