Place Value Unit Test Review Guide
Values and Places of Numbers
Example: What is the value of the underlined digit?
602,711.03
Answer: 600,000
Practice:
1.
2.
3.
4.
What is the value of the underlined digit?
What is the value of the underlined digit?
What is the value of the underlined digit?
What is the value of the underlined digit?
Example: What place is the underlined digit in?
7,230,864
12,098,355
680.35
4.049
4,031.12
_______________
_______________
_______________
_______________
Answer: Hundredths
Practice:
5.
6.
7.
8.
What place is the underlined digit in?
What place is the underlined digit in?
What place is the underlined digit in?
What place is the underlined digit in?
78,342,960
67,392
89.435
3.143
_______________
_______________
_______________
_______________
Changing Fractions to Decimals
Example: Change
to a decimal.
Answer: 0.024
Practice:
9.
Change
to a decimal.
________________
10. Change
to a decimal.
________________
11. Change
to a decimal.
________________
12. Change
to a decimal.
________________
Standard Form, Word Form, and Expanded Form of Whole Numbers and Decimals
Examples:
Standard Form: 200,036
Word Form: two hundred thousand, thirty six
Expanded Form: (2 x 100,000) + (3 x 10) + (6 x 1)
Standard Form: 1.27
Word Form: one and twenty-seven hundredths
Expanded Form: (1 x 1) + (2 x ) + (7 x )
Practice:
13. Write six million, one hundred sixty-two thousand, five hundred one in standard form and expanded form.
14. Write twelve and six tenths in standard form and expanded form.
15. Write (4 x 1,000,000) + (2 x 100,000) + (7 x 10,000) + (1 x 1,000) + (3 x 100) + (3 x 10) + (6 x 1) in
standard form and word form.
16. Write (2 x 10) + (9 x
) + (3 x
) in standard form and word form.
17. Write 1,067,892 in word form and expanded form.
18. Write 22.876 in word form and expanded form.
Rounding Whole Numbers and Decimals
Remember the poem –
“5 or more, raise the score.
4 or less, let it rest!”
Example: Round 3.91 to the ones place.
Round 5.65 to the tenths place.
Answer: 4
Answer: 5.7
**When rounding WATCH OUT for those nines!**
Example: Round 29,912 to the thousands place.
Round 9.5 to the ones place.
Answer: 30,000
Answer: 10
Practice:
19. Round 7,893,112 to the hundred thousand place.
20. Round 87,203 to the thousands place.
21. Round 6.236 to the tenths place.
22. Round 8.739 to the hundredths place.
23. Round 1,952,000 to the hundred thousand place.
24. Round 65.397 to the hundredths place.
Comparing Whole Numbers and Decimals
Symbols:
greater than
less than
equal to
Example: 12.45
12.48
Remember: Line up your decimals to compare
decimal numbers and line up your places to compare
whole numbers.
Answer: 12.45
12.45
12.48
12.48
The eight is greater than the five.
Practice:
25. 6,789,304
6,798,304
_________________
26.
87.040
_________________
87.04
Ordering Whole Numbers and Decimals
**Remember to LINE UP THE DECIMALS**
Example: Order from least to greatest: 6.27, 5.89, 6.25, 5.23
6.27
5.89
6.25
5.23
#4
#2
#3
#1
Answer: 5.23, 5.89, 6.25, 6.27
Look at the numbers from left to right.
Practice:
27. Order from least to greatest: 43,200; 43,206; 43,210; 43,222
28. Order from least to greatest: 1,659,345; 1,659,332; 1,632,120; 1,659,346
29. Order from greatest to least: 12.042; 13.34; 12.044; 16.721
30. Order from greatest to least: 0.657; 0.672; 0.632; 0.829
Adding and Subtracting Decimals
Examples:
22.34 + 34.68
22.34 Make sure you line up the decimals.
+34.68
57.02
Practice:
31. 123.45 + 32.89
32. 45.392 + 1.672
33. 101.93 – 96.13
34. 7.303 – 4.165
67.32 – 43.13
67.32
- 43.13
24.19