Jan. 22-26

Grade 7 Problem of the Week Jan. 22-26

1.  Sarah says all even numbers are divisible by 4. Is she correct? Explain.

2. Without using a calculator or dividing, how do you know that 3 is not a factor of 5683?

3. Use your divisibility rules to determine if 7 427 466 391 can be divided by 2? 3? 4? 5? 6? 9? or 10?

4a.  I am divisible by 2 and 3. I am between 21 and 29. What number am I? Explain how you found the number.

b. I am divisible by 2 and 9. I am between 424 and 449. What number am I? Explain how you found the number.

5. Determine if the following statements are true or false. Provide examples to prove your answer.

a) All numbers divisible by 9 are also divisible by 3.

b) All numbers divisible by 16 are also divisible by 2 and 4.

c) All numbers divisible by 3 are also divisible by 9.