Base 10 and Decimals

Numbers Base 10 Unit Review

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Area Model Multiplication

• What number would go in the bottom left corner?

• What's the answer?

Open Ended

What multiplication equation matches this area model?

Multiple Choice

Based on the area model, what is the product of 13 and 7?

• 70

• 21

• 91

Distributive Property

• Let's rewrite 8(17) as:

• 8(10+7)

• This becomes 8(10)+8(7) = ?

Multiple Choice

Use the distributive property to multiply:

12 (3 + 4) =

• 36 + 48

• 15 + 16

• 123 + 124

• 0.84

Dividing using "chunking"

• remember to make a multiplication bank.

Poll

Would you rather be covered in fur or covered in scales?

• covered in fur

• covered in scales

Adding or Subtracting Decimals

• Remember to line up the decimals points!

Multiple Choice

2.98 + 5.3 =

• 2.51
• 8.28
• 3.63
• 2.37

Multiple Choice

7.05 - 4.6 =

• 2.45
• 3.65
• 11.65
• 11.45

Multiplying Decimals

• Add up the TOTAL number of decimals places.

• multiply like normal

Multiple Choice

3.7 x 0.43 = 

•  1.591
• 15.91
• 18.7
• 1.87

Dividing Decimals

Poll

Would you rather have all traffic lights you approach be green or never have to stand in line again?

• green traffic lights

• no lines

Poll

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