Writing Numbers
Rounding
Adding And Estimating
Integers (30 seconds)
Definitions
100

In a recent year Ford Motor Company had a loss of $-14,672,000,000. Show how you would read this number.

Negative fourteen billion, six hundred and seventy two million dollars

100

Round 378 to the nearest hundred.

400

100

47 + 385 + 87 + 439 + 874

1,832

100

Add or subtract the integers as indicated. 

(-32) + (-27)

-59

100

What are addends?

numbers being added.

200

General Motors had a loss of $30,860,000,000 in a recent year. Show how you would read this number.

Thirty billion, eight hundred and sixty million dollars

200

Round 9,374 to the nearest thousand.

9,000

200

32,948 + 6,804 + 15,695 + 415 + 7,739

63,601

200

Add or subtract the integers as indicated.

-36 - (-18)

-18

200

What is an estimate?

to find a reasonable approximate answer for a calculation.

300

Write the words used to read the number.

800,007,190

Eight hundred million, seven thousand, one hundred and ninety

300

Round 834 to the nearest ten.

830

300

Estimate the sum by rounding each number to the first digit. Then find the exact sum.

747 + 854 + 324 + 687

Estimate 2,600

Exact 2,612

300

Add or subtract the integers as indicated.

11 - (-22)

33

300

What is a multiplicand?

the number being multiplied.

400

Write as numbers.

Three hundred million, seven hundred sixty thousand, five hundred twelve

300,760,512

400

Round 3,784,809 to the first digit.

4,000,000

400

Estimate the sum by rounding each number to the first digit. Then find the exact sum.

3,748 + 9,409 + 3,577 + 4,601

Estimate 22,000

Exact 21,335

400

Add or subtract the integers as indicated.

-198 + 76

-122

400

What is a partial product?

the product of one digit of the multiplier and the entire multiplicand.

500

Write as numbers.

Thirty-two million, nine hundred forty-three thousand, six hundred eight.

32,943,608

500

Round 5,178 to the first digit.

5,000

500

Estimate the sum by rounding each number to the first digit. Then find the exact sum.

74,374 + 82,849 + 72,494 + 89,219  

Estimate 310,000

Exact 318,936

500

Add or subtract the integers as indicated.

-(-88) + 35

123

500

What is a minuend?

the beginning amount or the number that a second number is subtracted from.

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