BASIC 1 MATHEMATICS QUESTION 15

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.

Question focus: Identifying and correcting errors and omissions in counting or skip counting sequences (skip counting forwards by 10s)
 

Now!!! 
Identify the correct skip count, errors and omissions by skip counting by 10s forwards.
 
Example:
10, 20, 31, 40, 51
Correct Skip count: 10, 20, 30, 40, 50
Error: 31, 51
Omissions: 30, 50
 
Now solve the following
 
1. 20, 31, 41, 50, 61
Correct Skip Count:
Error:
Omissions:
 
2. 30, 41, 51, 60, 71, 80
Correct Skip Count:
Error:
Omissions:
 
3. 50, 61, 70, 81, 90, 101
Correct Skip Count:
Error:
Omissions:
 
4. 90, 101, 111, 120, 131
Correct Skip Count:
Error:
Omissions:
 
5. 100, 111, 121, 130, 141, 150
Correct Skip Count:
Error:
Omissions:
 
6. 120, 131, 141, 150, 161
Correct Skip Count:
Error:
Omissions:
 
7. 140, 151, 160, 171, 180
Correct Skip Count:
Error:
Omissions:
 
8. 190, 201, 210, 221, 230
Correct Skip Count:
Error:
Omissions:
 

 
1. 20, 31, 41, 50, 61
Correct Skip Count: 20, 30, 40, 50, 60
Error: 31, 41, 61
Omissions: 30, 40, 60
 
2. 30, 41, 51, 60, 71, 80
Correct Skip Count: 30, 40, 50, 60, 70, 80
Error: 41, 51, 71
Omissions: 40, 50, 71
 
3. 50, 61, 70, 81, 90, 101
Correct Skip Count: 50, 60, 70, 80, 90, 100
Error: 61, 81, 101
Omissions: 60, 80, 100
 
4. 90, 101, 111, 120, 131
Correct Skip Count: 90, 100, 110, 120, 130
Error: 101, 111, 131
Omissions: 100, 110, 130
 
5. 100, 111, 121, 130, 141, 150
Correct Skip Count: 100, 110, 120, 130, 140, 150
Error: 111, 121, 141
Omissions: 110, 120, 140
 
6. 120, 131, 141, 150, 161
Correct Skip Count: 120, 130, 140, 150, 160
Error: 131, 141, 161
Omissions: 130, 140, 160
 
7. 140, 151, 160, 171, 180
Correct Skip Count: 140, 150, 160, 170, 180
Error: 151, 171
Omissions: 150, 170
 
8. 190, 201, 210, 221, 230
Correct Skip Count: 190, 200, 210, 220, 230
Error: 201, 221
Omissions: 200, 220