Divisibility & Factors

1) A number is divisible by 2 if the ones digit is ___, ___, ___, ___, or ___.

2) A number is divisible by 3 if the sum of the digits is divisible by ____.

3) A number is divisible by 4 if the number formed by the last two digits is divisible by ____.

4) When is a number divisible by 5? Explain.

5) A number is divisible by 8 if the number formed by the last three digits is divisible by ____.

6) A number is divisible by 9 if _____

7) When is a number divisible by 10? Explain.

Test whether each number is divisible by 2, 3, 4, 5, 8, 9, or 10. List them.

8) 36

9) 150

10) 2,235

11) 245

12) 210

13) 930

14) 6,168

15) 3,864

16) 2,241

17) 120

18) 875

19) 10,210

20) 10,560

21) 7,848

22) 4,725

Find the factor pairs for each number.

23) 26

24) 42

25) 29

26) 110

27) 56

28) 150

29) 77

30) 92

31) 84