Multiplying by Multiples of 10 and the Associative Property

What is the main objective of today's lesson?

• To learn about the commutative property

• To understand the associative property and use it to multiply by multiples of 10

• To practice addition and subtraction

• To learn about fractions

What is the first step in the zeros trick?

• Find the basic facts

• Count the number of zeros in the equation

• Multiply the numbers directly

• Add the zeros to the product

If you have 9 times 70, what is the basic fact you need to find?

• 9 times 10

• 9 times 7

• 70 times 10

• 7 times 10

What is the result of 9 times 70 using the zeros trick?

• 90

• 700

• 63

• 630

How many times do you skip count by 10 to reach 60?

• 4 times

• 5 times

• 7 times

• 6 times

What two numbers can you multiply to get 90?

• 8 and 10

• 9 and 10

• 6 and 10

• 7 and 10

What does the associative property state?

• The order of factors does not matter

• Multiplication is the same as addition

• Changing the group of factors does not change the product

• Changing the group of factors changes the product

In the equation 5 times 30, what are the basic facts?

• 3 and 10

• 5 and 3

• 30 and 10

• 5 and 30

What is the product of 6 times 20 using the associative property?

• 200

• 120

• 60

• 12

How many zeros do you add to the product of 9 times 3 when multiplying by 30?

• 3

• 2

• 1

• 0