Math Magicians Practice, Weeks 1 and 2

​Math Magicians Review

• Even/Odd and Prime/Composite

• Factors and Multiples

• Square Numbers

• Divisibility

Section 1: Even/Odd and Prime/Composite

This is not timed. No rush! Answer each question to the best of your ability.

Multiple Choice

What is an even number?

• A number that cannot be evenly divided by 2.

• A number that has a 1, 3, 5, 7, or 9 in the ones place.

• A number that has a 0, 2, 4, 6, or 8 in the ones place.

Multiple Choice

Is this number even or odd?

567,890,213

• Even

• Odd

Multiple Choice

What is a prime number?

• A number with exactly two unique factors.

• A number with three or more unique factors.

• A number that creates a square array.

Multiple Choice

What is a composite number?

• A number with exactly two unique factors.

• A number with three or more unique factors.

• A number that creates a square array.

Multiple Choice

Is 36 prime or composite?

• Prime

• Composite

Multiple Choice

Take a moment and work it out: Which number below is composite?

• 3

• 13

• 23

• 33

Multiple Choice

Is 21 prime or composite?

• prime, because it as 2 factors

• composite, because it has 2 factors

• composite, because it has 4 factors

• neither

Section 2: Factors and Multiples

Don't make careless mistakes. Slow and steady wins the race.

Multiple Choice

Select the multiplication sentence for the following array:

(Dive, then swim people! Dive, then swim!)

• 3 x 3 = 9

• 5 x 9 = 45

• 1 x 6 = 6

• 2 x 3 = 6

Multiple Choice

Write an equation for this math problem.

• 4 x 6 = n

• 7 x 5 = n

• 6 x 3 = n

• 4 x 7 = n

Multiple Choice

What is a factor?

• A number that divides evenly into a whole number.

• An arrangement of objects into columns and rows.

• The result of multiplying a number by itself and it makes a square array.

Multiple Choice

What is a multiple?

• a set of numbers that have no members in common

• a characteristic or property of members of a set

• multiplication combinations of any two numbers 0-9

• a number that is the product of a given number a whole number

Multiple Choice

1, 2, 4

These numbers are ________ of 4.

• Factors

• Multiples

Multiple Choice

Fill in the missing multiple.

3: 3, 6, 9, ___, 15, 18, 21

• 10

• 11

• 12

Multiple Choice

What is true about multiples?

• They go higher than the number.

• They go lower than the number.

Multiple Choice

What are some of the multiples of 12?

• 1, 2, 3, 4, 6, 12

• 36, 48, 60, 72

• 1, 2, 3, 4, 5, 6,

• 6, 12, 24, 36

Multiple Choice

Is the number 6 a factor or a multiple of the number 3?

• Factor

• Multiple

Section 3: Square Numbers

This is the last section. You've go this!

Multiple Choice

What is a square number?

• A number that divides evenly into a whole number.

• An arrangement of objects into columns and rows.

• The result of multiplying a number by itself and it makes a square array.

Multiple Choice

How do I find a square number?

• I subtract numbers.

• Adding any 2 numbers together

• I multiply any 2 numbers.

• I multiply a number times itself.

Multiple Choice

What is 9²?

• 81

• 18

• 99

• 91

Section 4: Divisibility

For this section, use your Divisibility Rules page to help you.

Multiple Choice

Is the number 51 divisible by 3?

• Yes

• No

Multiple Choice

Is the number 89 divisible by 3?

• Yes

• No

Multiple Choice

Is the number 78 divisible by 6?

(remember to check the rules for 2 and 3)

• Yes

• No

Multiple Choice

What are the factors of 54?

• 1, 2, 3, 18, 27, 54

• 1, 2, 3, 6, 9, 18, 27, 54

• 1, 2, 3, 4, 6, 9, 16, 18, 27, 54

Multiple Choice

Is 6 a factor of 32?

• Yes

• No

Poll

How confident do you feel about your knowledge of basic multiplication facts up to the 10s?

• Very confident.

  I have them all memorized.

• Somewhat confident.

  I memorized most of them and can figure the others out by skip counting.

• I know some of them, but I struggle to answer them quickly.

• I need to practice them because I don't have many of them memorized.

​You are finished!

If you need more practice because you missed some questions, please play again. We all get better with practice!