The table shows the number of Primary 1 students in Fred School who participated in a Mathematics class.
- How many Primary 1 students did not participate in the training?
- What is the enrolment of Primary 1 students in Fred School?
(a)
Number of students who did not participate in each class:
Class 1A → 31 - 20 = 11
Class 1B → 26 - 19 = 7
Class 1C → 30 - 26 = 4
Class 1D → 32 - 28 = 4
Class 1E → 28 - 21 = 7
Total number of students who did not participate
= 11 + 7 + 4 + 4 + 7
= 33
(b)
Total enrolment
= 31 + 26 + 30 + 32 + 28
= 147
Answer(s): (a) 33; (b) 147