Vocabulary
What is the name of the dot that separates the whole-number part from the decimal part of a number?
Decimal point
Round 6.42 to the nearest tenth.
6.4
Which symbol makes the statement true?
4.25 _____ 4.52
4.25 < 4.52
What is the value of the 5 in:
354,821
50,000
What place is the 7 in?
5.723
Tenths
Write this number in standard form:
Six hundred twenty-four thousand, three hundred eighteen
624,318
What does place value tell us?
The value of a digit based on its position in a number.
Round 8.67 to the nearest tenth.
8.7
Compare.
7.305 _____ 7.350
7.305 < 7.350
What digit is in the hundred-thousands place?
682,415
6
What is the value of the 8?
4.682
0.08
or
8 hundredths
Write 4,305.27 in written form.
Four thousand three hundred five and twenty-seven hundredths
What does it mean to round a number?
To find a number that is close to the original number but simpler to use.
Round 4.386 to the nearest hundredth.
4.39
Order from least to greatest:
3.5, 3.05, 3.55, 3.505
3.05, 3.5, 3.505, 3.55
What is the place value of the 7?
3,742,615
Hundred-thousands place
Its value is 700,000.
What digit is in the thousandths place?
9.457
7
Write 6.482 in expanded form.
6 + 0.4 + 0.08 + 0.002
What does standard form mean?
Writing a number using digits.
Example: 4,562.37
Round 7.8246 to the nearest thousandth.
7.825
Order from greatest to least:
6.09, 6.9, 6.099, 6.009
6.9, 6.099, 6.09, 6.009
What is the value of the 8?
28,493,176
8,000,000
Look at:
12.635
What is the place AND value of the 3?
Place: Hundredths
Value: 0.03
Write this in standard form:
30,000 + 5,000 + 600 + 20 + 4 + 0.7 + 0.05
35,624.75
What is expanded notation?
Writing a number by showing each digit multiplied by its place value.
Example:
4.326
(4 × 1) + (3 × 0.1) + (2 × 0.01) + (6 × 0.001)
Round 9.951 to the nearest tenth.
10.0
Order from least to greatest:
8.208, 8.28, 8.028, 8.802, 8.082
8.028, 8.082, 8.208, 8.28, 8.802
In the number:
54,638,217
What digit is in the ten-thousands place, and what is its value?
Digit: 3
Value: 30,000
Look at:
7.482
What is the value of the 2?
0.002
Write 8,245.639 in expanded notation.
(8 × 1,000) + (2 × 100) + (4 × 10) + (5 × 1) + (6 × 0.1) + (3 × 0.01) + (9 × 0.001)