Vocabulary
Place Value
Other Forms, Comparing, and Rounding
More Rounding and Renaming the number
Estimating and Problem Solving
100
What is Word Form?
When we show a number in using letters.
100
Find the value of the 8 in the number 380, 671.
80,000
100
Write the number in two other forms. two hundred thirty four thousand, one hundred sixty-four
234,164 200,000+30,000 + 4,000+100+60+4
100
Round to the nearest hundred thousand. 423,906
400,000
200
What is expanded form?
When we show the value of each digit in a number, separated by plus signs.
200
Find the value of the 9 in the number 10,698.
90
200
Write the number in two other forms. 791,030
seven hundred ninety-one thousand, thirty 700,000+ 90,000+ 1,000+30
200
Round to the nearest hundred thousand. 583, 342
600,000
300
What is standard form?
The number written in numbers, just the way it is.
300
Find the value of the 6 in 650,234
600,000
300
Compare. Write <,>, or =. 600,849 ____ 398,989
>
300
Rename the number. Draw a picture. 650= ___ tens
65 tens
300
Estimate. Then find the sum or difference. 185,239+ 491,056
676,295
400
What is an estimate?
An estimate is close to an exact amount.
400
Which period are the digits 8,6, and 0 in in the number 192,860?
The ones period.
400
Round to the nearest thousand. 624,531
625,000
400
Rename the number. Draw a picture. 780,000= 78 ________
thousands
400
Estimate. Then find the sum or difference. 709,032-249,136=
459,896
500
How can you find an estimate?
By rounding a number to the nearest 1,000 or 10, 000
500
Which period are the digits 4,3, and 5 in in the number 435,870?
The thousands period.
500
Round to the nearest ten thousand. 463,356
460,000
500
Rename the number. Draw a picture. 34,000= 34_____
Thousands
500
Pike National Forest located in California has a total area of 871,495 acres. What is the area rounded to the nearest thousand?
871,000
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