Math Unit 2

Expanded/Word/Standard Form

100

Write 312.96 in expanded form

300 + 10 + 2 + .9 + .06

200

Write six hundred ninety four and two hundred three thousandths in standard form?

694.203

300

Write 84.51 in word form

eighty four and fifty one hundredths

400

Write 347.503 in expanded form

300 + 40 + 7 + .5 + .003

500

Write 639.071 in word form

Six hundred thirty nine and seventy one thousandths

Place Values

100

245.6

The 6 digit is in which place?

Tenths

200

Which place has the 7 digit?

12.345 + 15.524 =

Ones

300

Which number has the 8 digit ten times the value it is in 14.458?

a) 26.841

b) 96.378

c) 51.485

C) 51.485

400

Which number has the 7 digit 1/10 the value it is in 13.578?

a) 67.676

b) 33.712

c) 49.437

C) 49.437

500

Which number has the 5 digit is one hundred times the value it is in 13.695?

a) 130.695

b) 13.6

c) 7.534

C) 7.534

Comparing/Rounding Decimals

100

Round 15.48 to the nearest tenth

15.5

200

>  <  or =

.073 ______ .31

< (.31)

300

Round this to the nearest ten

367.54

400

>  <  =

1.246 ______ .798

> (1.246)

500

After rounding to the nearest hundredth, add the numbers together.

12.643 + 9.357 =

22

Adding/Subtracting Decimals

100

249.62 + 13.27 = ?

262.89

200

447.77 - 236.51 = ?

211.26

300

Estimate to the ones place, then solve:

317.89 + 47.16 = ?

365

400

Solve:

200,007.63 - 49.51 = ?

199,958.12

500

312.64 + 21.77 - 168.39 = ?

166.02

Mystery

100

Which number has the 3 digit with a greater value?

3.19 or 41.38

3.19

200

Estimate and solve:

21.94 + 6.11 = ?

28

300

True or False?

19.517 + 32 = 19.549

False

400

How many millimeters equal one meter?

1,000

500

A dog runs 93.86 meters to fetch his toy. He then runs back to you the same distance. How many meters does he run? Explain why your answer is reasonable!

93.86 + 93.86 = 187.72

94 + 94 = 188