Adding & Subtracting Decimals

Representing Decimals

100

Write the decimal thirteen hundredths in standard form

What is 0.13

200

Write six and five tenths in expanded form

What is (6x1) + (5x0.1)

300

Write 8.051 in word form

What is eight and fifty one thousandths

400

Write two and twenty-one thousandths in standard form

What is 2.021

500

Write one and nine hundredths in standard form and expanded form

What is 1.09 and (1x1) + (0x0.1) + (9x0.01)

Comparing & OrderingDecimals

100

Use < , > or = to compare each pair of decimals 0.06 ______0.60

What is <

200

Use < , >, or = to compare the set of decimals 4.888_______4.880

What is >

300

Use <, >, or = to compare the set of decimals 2.03_____2.030

What is =

400

Order each set of decimals from greatest to least. 5.222, 5.202, 5.022, 5.2222

What is 5.2222, 5.222, 5.202, 5.022

500

Order each set of decimals from greatest to least. 0.04, 0.0404, 0.404, 0.0444

What is 0.404, 0.0444, 0.0404, 0.04

Reasonable Estimates

100

Estimate using rounding. 38.23 + 11.84

What is 38 + 12 = 51

200

Estimate using Rounding. 75.38 + 22.04

What is 75. + 22 = 97

300

Estimate 31.29 + 58.07

What is 31 + 58 = 89

400

Shakira estimates the sum $14.2 + $9.93.  Which could be a reasonable estimate for the sum? Select all that apply.

a. $20

b. $22

c. $24

d. $24.50

e. $30

a, c, d

500

What is a reasonable estimate for the sum 21.34 + 6.45? 

a. 27

b. 28.5

c. 29

d. 32

a

Adding and Subtracting Decimals

100

Add the decimals 43.28 + 31.45

What is 74.73

200

DOUBLE JEOPARDY!!!  What do you wager?

Add the decimals 0.724 + 6.458

What is 7.182

300

Add the Decimals 1.325 + 0.081

What is 1.406

400

Subtract the decimals 148.93 - 121.36

What is 27.57

500

Subtract the decimals 248 - 131.48

What is 116.72

Word Problems

100

The cost of two magazines is shown in an advertisement.  Horse Health costs $4.85, and World of Ponies cost $3.69.  What is the cost of both magazines?

$8.54

200

An apple costs $1.35 and a carton of juice costs $2.89.  What is the cost of an apple and carton of juice?

$4.24

300

Val spends $16.37 at a store. She pays the sales clerk with a $20 bill and two quarters.  How much change should Val get back?

$4.13

400

A bicycle costs $129.98.  A man pays for the bike with $140.  How much change should he get back?

$10.02

500

A kite string was 60.3 meters long. After the kite was tangled in a tree, the string was 42.75 meters long. How much string was tangled in the tree?

17.55 m