Module 1 Review

Area Model

100

Use an area model to find the product of 4.6 and 3

13.8

200

Use an area model to find the product of 5.6 and 4. 

22.4

300

Use an area model to find the product of 5.48 and 6

32.88

400

Use an area model to find the product of 6.54  and 8

52.32

500

Use an area model to find the product of 7.21 and 3

21.63

Compare using >, <, or =.

100

2 tenths + 11 hundredths                         0.14

2 tenths + 11 hundredths  is greater

200

13 tenths + 7 tenths + 32 hundredths        2.42

  2.42 is greater

300

342 hundredths + 7 tenths            3 + 50 hundredths

342 hundredths + 7 tenths  is greater 

400

0.3x10^{2 +} 0.002 x10³                       0.3x 10 + 0.6 x10²

     

 0.3x 10 + 0.6 x10^{2    is greater}

500

2 + 31 x 1/10 + 14 x 1/100          2.345

2 + 31 x 1/10 + 14 x 1/100 is greater

Expanded Form/Word form/ Standard Form

100

Write 6.346 in word form 

six and three hundred forty six thousandths

200

what is two hundred fifty two and sixty five hundredths written in standard form. 

252.65

300

Write 2.34 in expanded form 

2x1 + 3x 1/10 + 4 x 1/100

400

Write 32.46 in expanded form 

3x 10 + 2x1+ 4x 1/10 +6x 1/100

500

82.402

8x10 + 2x1+ 4x 1/10+2x1/1000

Division

100

8.1 ÷ 5 =

1.62

200

0.7 ÷ 2 =

0.35

300

3.9 ÷ 6 

0.65

400

9 ÷ 4

2.25

500

91 ÷ 8

11.375

Mixed

100

5.65 x 10³

5650

200

6923 x 10²

692,300

300

Round 3.46grams  to the nearest gram 

3 grams 

400

Round 8.92grams to the nearest gram 

9 grams 

500

1. Dr. Mann mixed 9.846 g of chemical A, 12.184 g of chemical B, and 8.512 g of chemical C to make
   4 doses of medicine.  

2. About how much medicine did he make in grams?  Estimate the amount of each chemical by rounding to the nearest tenth of a gram before finding the sum.  Show all your thinking.

3. Find the actual amount of medicine mixed by Dr. Mann.

4. How many grams are in one dose of medicine?  
   
   

9.8 grams, 12.2 grams, 8.5 grams= 30.5 estimate 

actual- 30.542 

1 dose- 7.6355