4th Grade Chapter 2 Review

4th Grade Chapter 2 Review

We've learned a lot in this chapter

• Multiplication comparison sentences

• Multiplying 10s, 100s, 1000s

• And several different methods to multiply

Multiple Choice

The comparison sentence for the equation 9x3 = 27 is

• 27 is 3 times as many as 9

• 9 times as many as 3 is 27

Multiple Choice

6 x 3000

• 9000

• 18000

• 1800

Multiplication Methods

• Partial Products- break it up by place value

• Distributive products- break it up any way

• Halving and adding

• Regrouping- old school way

Multiple Choice

What does the phrase "Partial Product" actually mean?

• A type of bird

• The answer to a multiplication problem

• Part of the whole answer to a multiplication problem

• A type of cheese

Multiple Choice

Which of these multiplication problems is a part of 5,812 x 7?

• 7 x 100

• 7 x 5

• 7 x 800

• 70 x 2

Lets review vocabulary

• Factor = the numbers you multiply

• Product= answer to a multiplication problem

• Place value= the value of a digit based on where it is in a number

• Regroup=change amounts of equal value to rename a number 13 ones or 1 ten and 3 ones

• round- replace a number with another number closest to it.

• Estimate = find an answer close to the exact answer

Multiple Choice

Is the missing number a factor or a product? 3 x 9 = ___

• factor

• product

Multiple Choice

Is the missing number a factor or a product? ___ x 6 = 12

• factor

• product

Poll

Which method do you prefer to use when multiplying large numbers?

• Partial Products- Break it up by place value

• Regrouping- Old School Way

• Distributive Property -break it up in any way

We're gonna multiply some numbers get your notebook ready!

Multiple Select

A reasonable estimate of 7 x 43 is 280

• True

• False

Multiple Select

The product of 7 x 43 = 301

• True

• False

Multiple Select

5 x 5,126 = 25,630

• True

• False

Multiple Select

7 x 194 = 1,338

• True

• False