BASIC 3 || MATHEMATICS || QUESTION 11

STRAND 1: NUMBERS

SUB-STRAND 1: Counting, Representation, Cardinality and Ordinality
CONTENT STANDARD 1: Counting and estimate quantities from 0 to 10 000
INDICATORS AND EXEMPLARS 1: Use number names and the counting sequence to count and estimate quantities up to 10,000.
 
(E.g. 1. Skip count forwards and backwards from 0 to 10,000 by 10s, 50s 100s, 500s and 1000s starting at any point. Identify and correct errors or omissions in a skip counting sequence)
 
*SKIP COUNTING FORWARD AND BACKWARD BY 50s
 
Question focus: Skip counting backward by 50s
 
QUESTION 11
 
TIP: To skip count backwards by 50s means decreasing the numbers by 50. 

Example;

300 - 50 - 50 - 50 - 50 - 50 

300, 250, 200, 150, 100, 50

Now solve the questions below;

Subtract the following by skip counting backwards by 50s

1. 200 - 50 - 50 - 50 = _____

2. 350 - 50 - 50 - 50 = ______

3. 250 - 50 - 50 - 50 =______

4. 500 - 50 - 50 - 50 = _____

5. 400 - 50 - 50 - 50 = _____

6. 700 - 50 - 50 - 50 = _____

7. 1000 - 50 - 50 - 50 = _____

8. 800 - 50 - 50 - 50 = _____

9. 750 - 50 - 50 - 50 = _____

10. 650 - 50 - 50 - 50 - 50 = _____

1. 200 - 50 - 50 - 50 = 50

2. 350 - 50 - 50 - 50 = 200

3. 250 - 50 - 50 - 50 =100

4. 500 - 50 - 50 - 50 = 350

5. 400 - 50 - 50 - 50 = 250

6. 700 - 50 - 50 - 50 = 550

7. 1000 - 50 - 50 - 50 = 850

8. 800 - 50 - 50 - 50 = 650

9. 750 - 50 - 50 - 50 = 600

10. 650 - 50 - 50 - 50 - 50 = 450