How can you write these numbers with an exponent (scientific notation)?
700 =
7000 =
70,000 =
700,000 =
700 = 7 x 102
7000 =7 x 103
70,000 = 7 x 104
700,000 =7 x 105
What is the quotient when 2,415 is divided by 23?
105
Which the following expressions are equal to 25?
a) 15 + (40 / 4)
b) 5 x (13 - 8)
c) 22 + 9 x 3
d) 50 / (10 - 8)
a) 15 + (40 / 4)
b) 5 x (13 - 8)
c) 22 + 9 x 3
d) 50 / (10 - 8)
Andrew has a toy box in the shape of a cube.
He wants to know the volume of his toy box.
Which method will give Andrew the volume of the box?
A)Fill the box with unit cubes and count the number of cubes.
B)Cover the top of the box with unit squares and count the number of squares.
C) Cover each face of the box with unit squares and count the number of squares.
D) Put a tape marked in units along the bottom edge of the box and count the number of units.
A) fill the box with unit cubes and count the number of cubes
Round 345.945 to the nearest hundredth
345.95
In math class the other day, one of your classmates said that…
Do you agree or disagree? Explain why you agree or disagree.
Disagree. The correct answer is 10,000 because
10 x 10 x 10 x 10
You bought envelopes for your parents. There were 125 envelopes in each box and your parents asked you to buy 18 boxes. How many total envelopes were in the boxes? Estimate, then find the exact number of envelopes.
Estimate: 100 x 20 = 2,000 envelopes
Exact : 2,250 envelopes
DO NOT solve. Just write the expression for…
Subtract 23 from the product of 8 and 7.
A storage shed is 23 feet wide, 15 feet long and 11 feet tall. What is the volume of the shed?
3,795 cubic feet
Find the sum of 12 and 132.85
144.85
In which numbers are the digit in the hundreds place ten times the value of the digits in the tens place: Select ALL that apply
a) 54,450
b) 50,445
c) 40,533
d) 45,330
a) 54,450
b) 50,445
c) 40,533
d) 45,330
Daniel has 102 stamps. Manuel has twice as many stamps as Daniel. Kendra has twice as many stamps as Manuel. How many stamps do they have in all?
714 stamps
15 x 3 and 5 x 3
15 x 3 is 5 times as great as 5 x 3
A cereal box has a height of 32 centimeters. It has a base with an area of 160 square centimeters.
What is the volume, in cubic centimeters, of the cereal box?
5,120 cubic centimeters
Find the difference of 408.3 and 112.92
295.38
The weight of a blue whale is times the weight of a small dog. If the dog weighs 33 pounds, how much does the blue whale weigh?
330,000 pounds
A hippopotamus eats 88 pounds of food a day. How many pounds of food is that for a year? (Assume it is not a leap year!)
32,120 pounds of food
You read 9 books last month and 3 books this month. Your teacher read twice as many books as you. Write an expression for the number of books your teacher read.
(9 + 3) x 2
A fish tank has a volume of 16,000 cubic inches. It has a length of 40 inches and a width of 20 inches. What would be the height?
20 inches
Find the Product of 3.8 and 12.3
46.74
If the 9 were moved two places to the left, which statement describes the relationship between the present value of 9 and the new value of 9?
7,869
a) The new value would be 100 times the present value.
b) The new value would be 10 times the present value.
c) The new value would be 1/100 times the present value
d) The new value would be 1/10 times the present value.
a) The new value would be 100 times the present value.
b) The new value would be 10 times the present value.
c) The new value would be 1/100 times the present value
d) The new value would be 1/10 times the present value.
What is the value of the expression 351 x 882
309,582
You walked 20 miles last week and 22 miles this week. Your best friend walked 1/3 of the the distance you walked. Write an expression and solve for the distance that your best friend walked.
(20 + 22) / 3
or
(20 + 22) x 1/3
14 miles
A brick wall will be shaped like a rectangular prism. The wall needs to be 3 feet tall, and the builders have enough bricks for the wall to have a volume of 330 cubic feet. What would be the area of the base? What is one possibility for the length and the width?
110 square feet
Possible length and width:
11 and 10
55 and 2
21 - 1.3 x 4.8
14.76