Place Value
What PLACE does the number 4 represent?
2,547.239
tens
Write this number in standard form on your board:
200 + 40 + 6
246
Every power of ten has the value of ____ on the place value chart
Times ten or one move
A number to the left of another number on the place value chart is worth _______ than the number on its' right
ten times more
Round this number to the nearest whole number on your dry erase board:
56.037
56
What is the best estimation for
32.3 + 47.4
80
55.60 + 9.78
65.38
54.1 ______ 54.10
= (equal)
This is the total when adding two or more addends
Sum
What is the VALUE of the 9 in this number?
8,956.235
900
Write this number in standard form on your board:
3,000 + 30 + 0.05
3,030.05
What is 10 2 ?
100 or 10 X 10
A number to the right of another number on the place value chart is worth ___________ of the number to its' left.
1/10
Round this number to the nearest tenth on your dry erase board:
56.237
56.2
What is the best estimation for 526.45 + 38.9
540
5.92 + 3.48
9.40 or 9.4
The term for when two decimals have the same value
equivalent
This is the word for the answer when subtracting one number for another?
Difference
What is the place value of the 5 in this number?
30,239.015
Thousandths
Write this number in standard form on your board:
20,000 + 500 + 2 + 0.02 + 0.008
20,502.028
What is 10 4 ?
10,000
The value of the digit in the hundreds place in the number 653,841 is 1/10 the value of the digit in the thousands place in which number?
A. 748,917
B. 749,817
C. 784,917
D. 797,481
A
Round this number to the nearest tenth on your dry erase board:
25.15
25.2
What is the estimated total if you round the decimals to the nearest tenth?
56.24 and 8.98
65.2
1.29 + 0.38
1.67
68.00 __________ 68.001
< or less than
The digit that is to the upper right of a number that tells how many times to multiple that digit
Exponent
Which place value is directly to the right of the tens place?
Ones
Write this number in standard form on your board:
2 x 100 + 3 X 10 + 6 X 1
236
What is 10 1 ?
10
A number is given: 136.25
In a different number, the 6 represents a value which is one-tenth of the value of the 6 in the number above. What place value is represented by the 6 in the other number?
A. Hundredths
B. Tenths
C. Ones
D. Tens
B Tenths
Round this number to the nearest tenth on your dry erase board:
8.98
9
or 9.0
What is the estimated total to the nearest tenth for the expression:
13.62 + 25.15
38.8
A stack of jenga bars has a top bar with a length of 3.88 inches and the bottom bar is 4.56 inches. How much longer is the bottom bar than the top bar?
0.68
0.15 _____ 0.105
> or greater than
The form of a number when written in numerical form such as 32.5 or 876.43
Standard form
What palce value is directly to the left of the hundredths?
Tenths
Write this number in standard form on your board:
4 X 10,000 + 3 X 1,000 + 4 X 1 + 3 X 1/100
43,004.03
What is 10 0 ?
1
In which number does the 5 represent a value 10 times the value represented by the 5 in 35,187 ?
A. 117,568
B. 247,351
C. 325,827
D. 453,362
D 453,362
Round this number to the nearest hundredth on your dry erase board:
56.245
56.25
Estimate the sum of these three numbers to the nearest tenth:
4.28 21.35 14.65
4.3 + 21.4 + 14.7 =
40.4
56.03 - 22.1
33.93
0.015 _____ 0.05
< or less than
This is the property that allows you to place an addend in either the first or second position and still get the same answer or sum
Commutative Property
Say this number:
2,002.1
Two thousand two and one tenth
Write this number in standard form on your board:
7 X 100 + 5 X 1/10 + 4 X 1/100
700.54
What has the same value as 32 X 10 4 ?
A. 3.2
B. 320
C. 0.0032
D. 320,000
D
In which number does the digit 6 represent a value that is one tenth the value represented by the digit 6 in the number 506.42 ?
A. 504.26
B. 540.62
C. 560.42
D. 604.25
B. 540.62
Round this number to the nearest tenth on your dry erase board:
32.333
32.3
Crystal has a broom that is 32.56 inches long and Roxanne has a broom that is 28.75 inches long. About how much longer is Crystal's broom in tenths?
3.8 inches
327.01 - 28.001
299.009
0.002 _______ 0.0020
= or equal to
This is the property of addition that says addends can be grouped in any way and the sum will be the same
Associative Property
Say this number:
30,056.019
Thirty thousand fifty-six and nineteen thousandths
What is the error in the expanded form of
three hundred sixty-two and four hundred eight thousandths?
3 X 100 + 6 X 10 + 2 X 1 + 4 X 1/10 + 8 X 1/100
There should be + 8 X 1/1000 for the last part
What is the value of this expression:
54 X 10 1 ?
540
In the number 714.438 how does the value of the digit 4 to the left of the decimal point compare to the value of the digit 4 to the right of the decimal point?
The 4 to the left is worth 10 times more than the 4 to the right
Round this number 303.467 to the nearest whole number on your dry erase board
303
What is the sum of 362.549 + 235.017 rounded to the nearest hundredth?
595.57
52 - 31.66
20.34
157.890 ______ 157.809
> or greater than
Which decimal makes this equation true?
5.26 + _____ = 13.63
8.37
Write this number on your dry erase board:
Forty-two thousand six
42,006
What is the error for
6 X 10 + 7 X 1 + 2 X 1/10 + 3 X 1/100
when it should represent the number 67.203
the number in expanded form is 67.23
or the 3 X 1/100 should be 3 X 1/1000
What is the value of this expression?
4 X 10 5 + 3 X 10 3 + 2 X 10 2 ?
403,200
How is the value of the digit 2 in 32,000 compare with the value of the digit 2 in the number 26,000 ?
The 2 in 32,000 si worth 1/10 of the 2 in 26,000
or
The 2 in 26,000 is worth 10 times more than the 2 in 32,000
What two whole numbers would 56.3 fall between?
56 and 57
What is the estimated sum of 35.361 and 22.018 rounded to the nearest hundredth?
57.38
1 - 0.27
0.73
0.52 ____ 0.491
> or greater than
These numbers work well together so that you can use mental math to make computations easier. Such as 95 and 5 OR 2 and 8
Compatible Numbers
Write this number on your dry erase board:
Fifty-nine thousand twenty-one and six hundredths
59,021.06
Which expression has a value greater than 42.537?
A. 4X 10 + 2X 1 + 5X 1/10 + 9X 1/100 + 3X 1/1000
B. 4X 10 + 1X 1 + 6X 1/10 + 2X 1/100 + 5X 1/1000
C. 4X10 + 2X 1 + 5X 1/10 + 3X 1/100 + 7X 1/1000
D. 4X 10 + 2X 1 + 5X 1/10 + 1X 1/100 + 9X 1/1000
A
What is the value of this expression?
8 X 10 4 + 7 X 10 2 + 5 X 10 1 + 2 X 10 0
80,752
Which equation shows the relationship between the numbers 2,560 and 256 ?
A. 2,560 = 1,000 X ( 2 + 5 + 6 )
B. 2,560 = 10 X ( 2 + 5 + 6 )
C. 2,560 = 10 X ( 200 + 50 + 6 )
D. 2,560 = 1/10 X ( 200 + 50 + 6 )
Give a number between 32.3 and 32.4
32.31 or 32.32 or 3.2.33 or 32.34 or 32.35 or 32.36 or 32.37 or 32.38 or 32.39
What is the estimated perimeter of a rectangle with a width of 13.62 feet and a length of 35.15 feet to the nearest tenth?
13.6 + 13.6 + 35.2 + 35.2 =
97.6 feet
200 - 198.43
1.57
0.10 _____ 0.010
> or greater than
In 10 5 the 10 is the ___
Base