Exponents
Find 104.
10,000
An apple contains 106 calories. Last week, Rachel and Jaylene ate a total of 12 apples. How many calories did they eat?
1,272 calories
What is an exponent?
Accepted answers:
Repeated multiplication
The power of a number
Multiply 102 X 2
204
William ordered 1,018 Pokémon cards. Angel ordered 5 times as many cards as William. Write an equation and solve for how many cards Angel ordered.
1,018 X 5 = 5,090
Find 12 X 104.
120,000
Ms. Watson works at the grocery store for 172 hours each month. How many hours does she work in one year?
2,064 hours
What are Compatible Numbers?
Accepted answers:
Numbers that are easy to work with.
Numbers that allow you to do mental math.
Multiply 288 X 14
4,032
Lavon has 143 songs downloaded on his phone. Benjamin has 14 times more songs downloaded on his phone. How many songs does Benjamin have downloaded?
2,002 songs
Find 102 X 39.
3,900
Jala was building a LEGO tower. She built it with 822 stories and with 13 blocks on each story. How many LEGO blocks would she have used?
10,686 LEGO blocks.
What are partial products?
The product of two numbers when we break the numbers into parts an multiply them separately and then add them together.
Multiply 50 X 48
2,400
Is the equation correct? Explain.
12 X 100= 1,200
No. (Any acceptable explanations.)
The answer is actually 12.
64,710
There are 5 large fish tanks at the zoo. Each tank holds 2,946 gallons of water. How many gallons of water would it take to fill all of the tanks?
14,730 gallons of water
What is the Commutative Property? You may give an example.
Accepted answers:
A change in the order of the numbers does not affect the answer.
(Any acceptable example.)
Multiply 26 X 235
6,110
List at least two expressions that are equal to 5 X 103.
5 X 1,000
5,000
50 X 100
500 X 10
Find all of the following:
9 X 102
9 X 103
9 X 104
900
9,000
90,000
Ms. Terraza flies 827 miles round trip to visit her sisters. What is the total distance in miles that she would fly for 14 visits to visit her sisters?
11,578 miles
What is the Associative Property? You may give an example.
Accepted answers:
When more than two numbers are added/multiplied, the answer is the same regardless of how you group them.
(And acceptable example.)
Multiply 762 X 19
14,478
Clark County School District ordered 118 boxes of math books. The books were shipped with 36 books in each box. Write an equation and estimate the total number of math books ordered and determine if your estimate was over or under.
40 X 120 = 4,800
Overestimate because 40 > 36 and 120 > 118