Chapter 2
What is the prime number?
A number whose factors are 1 and itself.
What is the difference between the divisor and the dividend?
The divisor is the number that divides the dividend. (Outside the house)
The dividend is the number being divided. (Inside the house)
What is the quotient of 357 / 7 = ?
51
What place value is the 7 in?
360.975
Hundredths place
4,057.135
Hundreds
How could you write this using exponents? 2 x 2 x 2 x 3 x 4 x 5 x 5
23 x 3 x 4 x 52
Describe how you could use multiplication to find 28 / 7 = x
7 x 4 = 28
Find the quotient of 809 / 62 = x
x=13 r 3
Round the decimal to the indicated place.
17.94 ; tenths
17.9
What property of addition can the numbers be switched and the sum stay the same?
Commutative Property
What is the prime factorization of 42?
22 x 3 x 7
14 sticks
Estimate using compatible numbers. 847 / 43 = x
ex. 800 / 40 = 20
Find the sum. 19.21 + 11.03 = ?
30.24
Round each decimal to the nearest tenth, then subtract.
17.16 - 9.01
8.2
What is the prime factorization of 150? Write the answer using exponents.
2 x 3 x 52
What is 852 / 4 = p
p = 213
The area of a rectangle is 208 square inches, and the length is 26 inches, find the width.
Width = 8 inches
Determine if you need an estimate or exact answer.
SF High School filled out a survey. It showed that out of the 374 students, 195 speak a second language. How many students speak only one language?
Exact: 179 students
A rectangle has a length of 2.78 inches and a width of 0.8 inches. What is the area of the rectangle?
2.224 in2
Find the product using the distributive property. Show your work. Work counts! 6 x 83 = ?
(6 x 80)= 480 + (6 x 3) =18 = 498
The Burton family bought a car for $2,000. They made a down payment of $500. If they want to make 5 equal payments, how much will each of these payments be?
$2,000 - $500 = $1,500.
1,500 / 5 = $300 each payment.
Estimate first, show how you estimated, then solve. 25,696 / 352 = y
ex. estimate: 24,000 / 300 = 80
y = 73
Write an equation where the decimals will round up to 8 + 5 = 13
Ex. 7.89 + 4.55 = 12.44
Find the product. 1,000 x 105 = x
x = 100,000,000