Divisibility Detectives
240 ends in 0. Name one number it is divisible by.
What is 10? (also 2 or 5)
63 ÷ 9
What is 7?
50.4 ÷ 7
What is 7.2?
Estimate 42,689 ÷ 68
About 700.
42 + 3 ÷ 3
What is 43?
450 is divisible by 2, 3, 5, and 10. How do you know it's divisible by 5?
It ends in 0 or 5
36 ÷ 12
What is 3?
2.92 ÷ 4
What is 0.73?
Estimate 1,658 ÷ 3.
500–600.
2 × 25 ÷ 10
What is 5?
732 has a digit sum of 12. Which rules does it pass?
Divisible by 3 and 6.
54 ÷ 6
What is 9?
45.15 ÷ 39 (nearest hundredth)
What is 1.16?
Best estimate for 788.6 ÷ 21.
What is 40?
20 ÷ 5 + 10
What is 14?
10,755 ends in 5 and has a digit sum of 18. Name all divisors from {2, 3, 5, 10}.
What are 3 and 5?
258 ÷ 6
What is 43?
315.97 ÷ 51 (nearest hundredth)
What is 6.20?
Round to estimate: 208 ÷ 52.
What is 4?
(70 + 5) ÷ 10
What is 7.5?
A number ends in 8 and its digits sum to 21. Which rules does it pass?
Divisible by 2 and 3.
27 ÷ 3, 32 ÷ 8, 25 ÷ 5 — what do these all have in common?
They divide evenly with no remainder.
33 ÷ 50
What is 0.66?
Estimate 20,915 ÷ 89 by rounding both numbers.
About 200–300.
12 + 30 × 3
What is 102?