Comparing Decimals
Different Forms
Concepts & Skills
Rounding
Problem Solving
100
0.18 (__) 1.121
0.18 ( < ) 1.121
100
twenty-three thousand and four hundred six thousandths in standard form:
23,000.406
100
The __________ property shows that 2 + 8 = 2(1+4)
Distributive
100
Round 40.823 to the nearest WHOLE NUMBER
41
100
Randy caught a fish that weighed 3.53 kg. His brother caught a fish that weighed 5.08 kg. How many kilograms of fish did the boys bring home together?
8.61 kilograms; (reasonable?)
200
0.050 (__) 0.5
0.050 ( < ) 0.5
200
7.42 in word form:
seven and forty-two hundredths
200
The _________ form for the number 3.15 is the expression 3 + 0.1 + 0.05
expanded
200
round 5.099 to the nearest HUNDREDTH:
5.10
200
Shasha is saving for a bicycle. Last month, Shasha saved $56.93. Last week, she received $22.50 for walking the neighbor's dog and she spent $15.76 on a CD. If the bike costs $109.99, how much more does she need to save?
$46.32 (reasonable?)
300
1.09 (__) 1.090
1.09 (=) 1.090
300
70 + 2 + 0.4 + 0.03 in standard form:
72.43
300
How can you use the properties to add 2.4 + 5.7 + 2.6 mentally?
The decimal parts of two numbrs add up to 1 whole (0.4+0.6); (5.0)+5.7= 10.7
300
Round 82.128 to the nearest TENTH:
82.1
300
In 1931, Chuhei Nambu set a world record by jumping 7.98 meters in the long jump. In 1935, Jesse Owens set a new world record by jumping 8.13 meters. Estimate how much farther Jesse Owens jumped than Chuhei Nambu. Explain how you got your answer.
about 0.1 meter farther; Rounded each number to the nearest tenth. 8.1-8.0=0.1
400
5.508 (__) 0.859
5.508 (>) 0.859
400
98.704 in expanded form....bonus= expanded form using powers of 10:
90 + 8 + 0.7 + 0.004 (9x10) + (8x1) + (7x1/10) + (4x1/1000)
400
Increase 4.271 by 2 tenths
4.471
400
When Marla rounded 19.95 to the nearest tenth, she found the number changed to 20. Is this correct? explain
correct! The 5 rounds the 9 up to 10. 10 Tenths equals 1 one. 19+1=20
400
In 1931, Chuhei Nambu set a world record by jumping 7.98 meters in the long jump. In 1935, Jesse Owens set a new world record by jumping 8.13 meters. Exactly how many meters farther did Jesse Owens jump?
0.15 meters (8.13-7.98)
500
0.621 (__) 0.612
0.621 (>) 0.612
500
(4x10) + (5x1) + (9x1/100) + (3x1/1000) in STANDARD FORM:
45.093
500
Decrease 5.492 by three hundredths
5.462
500
Peter decided that the total cost for a $24.55 pair of jeans and a $12.25 shirt was $26.80. Was Peter's answer reasonable? Explain why or why not
No; $26.80 is not close to the estimate of $37...$25 + $12
500
Megan bought a bike for $99.98 and a helmet for $23.70 on tax-free day at a sports store. The store clerk gave Megan a discount of $14.50 for both items. If Megan gave the clerk $120 how much change should she receive?
$10.92 (99.98+23.70)-(14.50)= 109.08 $120-$109.08= $10.92
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