unit 2 Math Review

Place Value/ Comparing Decimals

100

#13

0.2 = 0.20

200

#4

Answers will vary.  Miss Smith will check. :)

300

#3

C and F

400

#11

B, E, F

500

#12

113 > 2.135

Rounding/ Estimating Decimals

100

#16

18

200

#19

$44 - $12 = $32

300

#17

3.10

400

#26

A. Yes

B.  No (700)

C. Yes

D. Yes

E. Yes

500

#18

A. 143.6

B. 100

C. 144

D. 140

E. 143.65

Adding/ Subtracting Decimals/ Properties

100

#28

A. 1.82 + 2.45 = 4.27

B. 5- 4.27= 0.73

200

#25

About 0.2 seconds. 12.40- 12.20= 0.2

12.38- 12.19= 0.19 seconds

300

#1

1.7+ 5.3= 7 + 2.57= 9.57

400

#2

(3.25 +7.75)= 11 + 4.89 = 15.89

500

#24

$33.67.  The cost of Rey's items is about $135.00 (about $90 + About $45).  The discount is about $19.  135-19= 116.  150-116 = 34.

Random

100

#7

Nine and fifty-seven hundredths

200

# 27

Sunday- 0

Monday- 0.24

Tuesday- 0.32

Wednesday-0

Thursday- 0

Friday- 0.18

Saturday- 0

B.   0.74 (shade the bar!)

300

#23

308.94 + 308.94= 617.88

309 + 309 =618

400

#8

(8 X 10) + (1 X 1) + (4 X 1/10) + (2 X 1/1,000)

500

#29

A. $2.82.  

B. The Customer didn't line up the decimals, so the whole numbers were not in the right place.

2.50

   .25

       5

+      2

                 

Forms of Decimals

100

#7

nine and fifty-seven hundredths

200

#10

25

300

#5

(2 X 100) + (4 X10) + (7 X 1) + (9 X 0.1) + (3 X .001)

400

#6

17,000.106

500

#9

209.708