Mathematics without a Calculator Flashcards
6 cards from real CAEC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Mathematics without a Calculator flashcards as text
What is the perimeter of a square with a side length of 11 cm?
Answer: 44 cm
Perimeter of a square = 4 × side = 4 × 11 = 44 cm.
Which of the following is divisible by both 4 and 6?
Answer: 24
24 is divisible by 4 (24÷4=6) and by 6 (24÷6=4). The LCM of 4 and 6 is 12, and 24 is a multiple of 12.
A bag contains 5 red marbles, 3 blue marbles, and 2 green marbles. What is the probability of randomly drawing a blue marble?
Answer: 3/10
Total marbles = 5+3+2 = 10. Probability of blue = 3/10.
If n − 7 = 15, what is the value of n?
Answer: 22
n = 15 + 7 = 22.
What is the median of the following set of numbers: 3, 7, 9, 2, 5?
Answer: 5
Arrange in order: 2, 3, 5, 7, 9. The middle value (3rd of 5) is 5.
A school survey found that 120 out of 400 students walk to school. What percentage walk to school?
Answer: 30%
Percentage = (120 ÷ 400) × 100 = 0.30 × 100 = 30%.