Unit 3 Rview

3 Digit Numbers

• Standard Form

• Written Form

• Expanded Form

• Base Ten Blocks

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Reading and Writing 3 Digit Numbers

​Help me fill in the blanks

Name that Number

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Labelling

Label the base ten blocks with the correct number. Cover the number on the picture with your answer.

Drag labels to their correct position on the image

one hundred ninety five

770

196

538

seventy seven

300+50+6

800+20+9

eighty twenty

​What strategies can we use to compare numbers?

The hungry alligator always eats the number that is __________

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Comparing Numbers

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Let' Compare

Dropdown

325​

Select answer

316

75​

Select answer

​715

263​

Select answer

623

840​

Select answer

804

Poll

What was your favorite strategy for adding three digit numbers?

• expanded form

• standard form

• Drawing base ten blocks

• Open number line

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​ 328
+585

​Let's Use Base Ten Blocks

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​ 129
+432

​Let's Use Expanded Form

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​ 27
33
32
+ 58

​Let's Use Base Ten Blocks

Let's practice regrouping. When do we need to regroup?

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Subtracting 3 Digit Numbers

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​ 495
-327

​ 600
-422

​Let's use the base ten blocks to subtract

Multiple Choice

Draw these blocks on your paper.

Solve 753 - 222 = ?

• 975

• 531

• 533

• 521

Multiple Select

The Greenfield Animal Shelter has 150 rabbits and 280 birds. Which expression shows the total number of rabbits and birds?

• 100 + 200

• 300 + 130

• 100 + 200 + 50

• 100 + 200 + 80

Multiple Choice

99 + 688

• 788
• 787
• 789
• 777

Multiple Choice

• 263

• 143

• 243

• 1,463