Powers, Square Roots and Divisibility Rules Review

Powers

100

A power is a way of representing or showing...

Repeated multiplication

200

The base of a power tell us...

The number that is being repeatedly multiplied.

300

What does the exponent in a power tell us?

How many times the base is multiplied to itself.

400

When a number is "cubed" what is the exponent?

3

500

A number that is "squared" has an exponent of...

2

Square Roots

100

The square root of 100 is...

10

200

What is the square root of 52?

7.2

300

What is the square root of 8²?

8

400

What is a perfect square?

When the square root is a whole number

500

What is the square root of 1200?

34.6

Divisibility Rules

100

How can you tell a number is divisible by 5 just by looking at it?

If the last digit is a 0 or a 5.

200

A number that is divisible by 2 and 3 is also divisible by...

6

300

Is the number 720 711 divisible by 3?

Yes - the sum of the digits is 18 and 3 is a multiple of 18.

400

Is the number 531 325 divisible by 9?

No - the sum of the digits is 19 which is not divisible by 9, so the whole number is not divisible by 9.

500

Any number that ends is 0 is divisible by...

2, 5, and 10

Problems

100

A square yard has an area of 100m² .  What is the distance around the square?

40m

200

What is 7³ as repeated multiplication?

7x7x7

300

Calculate 4⁵

1024

400

Which is greater 9² or 3⁴?

They are equal (81)

500

Is 3² the same as 2³?

No - 3² is 3x3 = 9 and  2³ is 2x2x2 = 8.