Vocabulary
Rounding
Place Value
Estimating Sums and Differences
Estimating Products and Quotients
100
The number 2,002,002 is written in what form?
Standard form
100
Round 1,939 to the nearest thousand.
2,000
100
In the number 2,937,045 the digit 7 is in what place?
Thousands place
100
8,068 + 2,643 =
11,000
100
9,301 x 5
45,000
200
There are nine different kinds of these, and and when combined together, they create numbers.
Digits
200
Round 1,939 to the nearest hundred.
1,900
200
In the number 2,937,045 the digit 9 is in what place?
Hundred thousands place
200
5,325 - 1,689 =
3,000
200
3,876 x 6
24,000
300
You can read numbers up to 10,000,000 by grouping them into what? (Hint: groups of three places)
Periods
300
Round 527,138 to the nearest thousand.
527,000
300
In the number 2,937,045 what is the value of the digit 3?
30,000
300
5,632 + 2,165 =
8,000
300
6,783 / 8
800
400
The method for estimating where the digit in the largest place value is used, and the left overs are then rounded is called what?
Front-end estimation with adjustment
400
Round 18,068,643 to the nearest million.
18,000,000
400
In the number 2,937,045 what is the value of the digit 2?
2,000,000
400
3,815 - 1,113 =
3,000
400
4,463 / 5
900
500
Numbers that are easy to add, subtract, multiply or divide are called what? (Hint: In division we used them as number pairs that are easy to divide)
Compatible numbers
500
Round 18,068,643 to the nearest ten-million.
20,000,000
500
2,937,045 ______ 2,937,035
>
500
Use front-end estimation with adjustments to find 3,924 + 7,806 =
11,700
500
6,581 / 7
900
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