decimals review!

compare

100

1 ______ 10 X 1 ¹

1 < 10 X 1 ¹

200

71.802 _______ 71.82

71.802 < 71.82

300

Two hundred eighty.        __________.     287.014

 seven and fourteen

 thousandths

Two hundred eighty.     =    287.014

 seven and fourteen

 thousandths

400

0.2034 ______ two thousand thirty four

0.2034 < two thousand thirty four

500

9.214 ____ 9.4

9.214 < 9.4

convert

100

1 kg = _____ g 

1 m=____ cm

1 m = ___mm

1 kg = 1,000 g 

1 m= .01 cm

1m= .001mm

200

15 kg = _____g

15 kg= 15,000 g 

300

13 mm=______ m

0.013 m

400

17 meter= _____cm

1,700 cm

500

18 kilograms = _____mm

18,000,000 mm

different forms

100

Write this number in standard form

.03 + 400 + 0.004

400.034

200

(1/10 x 2) + (1/100 x 5) + ( 2 x 100) + (2 x 10)

220.25

300

write the expanded form in word form

(9x10) + (4 x1,000) + (3 x 1/10) + (2 x 10⁰)

4,090.3

400

put word form into expanded form:

three-hundred fifteen and seventy two thousandths 

(3x100) + (10x 1) + (5x1) + (1/100 x 7) + (1/100 x 2) 

500

WRITE THE NUMBER SHOWN ON THE BOARD IN EVERY FORM!

ON BOARD 

solve

100

10³ X 50

50,000

200

200 X (1/10)

20

300

.15 X 10⁴

1,500

400

.009 X 10²

.9

500

Why do we go to the left when we multiply and the right when we divide?

When we multiply, our number gets bigger. When we divide, our number gets smaller. Since decimals are less than a whole number, every time we divide we have a portion of the whole. 

rounding

100

round 1.37 to the nearest tenth

1.4

200

round 0.921 to the nearest whole number 

1

300

Round to the nearest hundredth 0.223

0.22

400

round to the nearest thousandth

0.2345

.235

500

round to the nearest tenth and whole number

0.98

1