Math Spiral Review

4th Spiral Review

Lessons 1-7

The place value a digit is in MATTERS!

• The 6 in 645 is worth 600

• The 6 in 763 is worth 60

• The 6 in 56,423 is worth 6,000

Multiple Choice

What is the value of the 7 in 32,756?

• 7

• 70

• 700

• 7,000

We can write numbers in expanded form, to show the value of each digit!

• 32,472 = 30,000 + 2,000 + 400 + 70 +2

Multiple Choice

What number represents: 40,000 + 2,000 + 50 + 3

• 4,253

• 40,253

• 40,000 + 2,000 + 50 + 3

• 42,053

We can compare numbers to see which one is bigger!

• We can use <,>, and = to compare two numbers to each other

• Remember to line up the place values and compare from the left to the right (biggest to smallest place value

• 4,532 < 32,389

• 5,389 > 5,321

Multiple Choice

34,324 _____ 34,832

• >

• <

• =

You can round a number to make it easier to work with (and to estimate)

• Find the place

• Look next door

• If the number is 5 or bigger add one more!

• If it is 4 or less, let it rest!

Multiple Choice

Round 5,321 to the nearest THOUSAND

• 5,000

• 6,000

• 5,300

• 5,320

Adding numbers means we are putting them together

• The answer is called the SUM

• 200 + 50 = 250

• 10 + 5 = 15

The sum is 8,157

When we subtract numbers we are taking something away

• The answer is called the DIFFERENCE

• 20-4 = 16

• 500 - 25 = 475

The difference is 3,286!

How many is 6 times as many as 3

• 3 x 6 = 18

• 18 is 6 times as many as 3

Multiple Choice

Jason has 3 cupcakes. Omar has 5 times as many cupcakes as Jason. How many cupcakes does Omar have?

• 5

• 3

• 15

• 8

Omar has 15 Cupcakes!

3 x 5 = 15

How many times bigger is 30 than 6?

•  $30\ \div6\ =\ 5$  
  

• 6 x ? = 30

• 30 is 5 times as many as 6

Multiple Choice

Michael has 40 strawberries. He has 10 times more strawberries than Ashley. How many strawberries does Ashley have?

• 10

• 4

• 40

• 400

Ashley has 4 Strawberries!

 $40\ \div10\ =4$  
OR
10 x ? = 40

Poll

How do you feel about our review today?

• Oh no! I forgot everything!!

• I remembered some things, but not everything

• one or two questions confused me

• I remembered how to do everything we covered!