Multiplication and Division
640 x 390 = ?
249,600
Round this number to the nearest ten:
2,582
2,580
Look at the shapes on the board. What is the next shape in the pattern?
Hexagon (6 sided shape)
Triangle (3), Square (4), Pentagon (5)
The masses of different minerals were calculated:
Albite is 3.012 grams, graphite is 3.07 grams, magnetite is 3.061 grams and quartz 3.05 grams.
Which number sentence correctly compares the masses of two of the mineral samples?
a. 3.05 < 3.061
b. 3.05 < 3.012
c. 3.012 > 3.07
d. 3.012 > 3.061
a. 3.05 < 3.061
What is 18 divided by 1/12?
216
18/1 x 12/1 = 216
You have 25 yellow rubber balls and 50 red rubber balls. Each yellow ball weighs 1.28 pounds, and each red ball weighs 0.96 pounds. What is the total weight of all the yellow and red balls?
80 pounds
25 x 1.28 = 32.00
50 x 0.96 = 48.00
48 + 32 = 80
Round this number to the nearest thousandth:
154.3905
154.391
The numbers shown below are the beginning of a pattern:
2, 6, ?, ?, ?, ?
The pattern's rule is to add the same number each time. What would the next three numbers in the sequence if you follow the pattern?
10, 14, 18
Add 4 each time.
A rectangle has a length of 10 centimeters and a height of 14 centimeters. What is the area of the rectangle?
Area = length x height
10 x 14 = 140 centimeters
A space heater warms the temperature of a room by 2/3 of a degree Fahrenheit each minute. By how many degrees Fahrenheit will the space heater warm the room in 6 1/2 minutes?
4 1/3
A rock weighs 6 1/2 (6.5) tons. How many pounds does the work weigh?
HINT: 1 ton = 2,000 pounds
13,000.0 pounds
In this number, which digit is in the ten thousands place:
389,002
8
Here is another start of a sequence of numbers:
2, 6, ?, ?, ?
This pattern's rule is to multiply by the same number each time. What would the next three numbers in the sequence be if we followed this pattern?
18, 54, 162
Multiply by 3 each time.
Paul has a bin that has a height of 6 feet, a width of 2 feet and length of 5 feet. What is the volume of Paul's bin in cubic feet?
HINT: Volume = length x width x height
60 cubic feet
6 x 2 x 5 = 60
5/8 or 15/24
Emma and Bella collect bugs for a science project.
On Monday, Emma collects 15 bugs, and Bella collects three times as many bugs as Emma.
On Tuesday, Emma collects 6 bugs, and Bella collects 8 times as many bugs as Emma.
What is the total number of bugs the girls collected on both days?
114 bugs
(15 + [3 x 15]) + (6 = [6 x 8]) = 114
68.96
33.165 rounds to 33.17
35.787 rounds to 35.79
33.17 + 35.79 = 68.96
1, 2, 4, 8, 16, ?, ?
Identify the pattern. What are the next two numbers in the pattern?
Double each number in the pattern to find the next number.
32, 64
A company uses boxes with these dimensions:
width: 6 inches
length: 1 foot
height: 1 foot
What is the volume, in cubic inches, of each box?
HINT: 1 foot = 12 inches
volume = length x width x height
864 cubic inches
12 inches x 12 inches x 6 inches = 864
Sophie had 60 flashlights for sale at her store. She sold 4/5 of the flashlights. How many flashlights did she sell?
48
60/1 x 4/5 = 240/5
240 divided by 5 is 48
A gardening shop receives a shipment of 12 crates of plants. Each crate contains 18 plants. All of the plants are going to be displayed on 24 shelves with the same number of plants on each shelf. How many plants will be displayed on each shelf?
9 plants on each shelf.
18 x 12 = 216
216 / 24 = 9
Joe writes a number with a 3 in the tenths place. Ellie also writes a number with a 3 as a digit. The value of the 3 in Ellie's number is 10 times the value of the 3 in Joe's number. Which number could be the one Ellie wrote?
a. 324.67
b. 423.67
c. 426.37
d. 426.73
b. 423.67
10 x .3 = 3.0
Circle, Triangle, Square, Pentagon
These four shapes are repeated in order to form a pattern. If the pattern continues, what is the 67th shape in the pattern?
Square
4 shapes x 16 repetitions of the pattern get you to 64 shapes.
65 is a circle, 66 is a triangle, and 67 is a square.
Luke needs to find a box that has a total volume of 24 cubic inches. Find a possible combination of length, width and height, all in whole numbers of inches of a box Luke could use.
Option A: 2 x 2 x 6
Option B: 2 x 3 x 4
7/12 + 1/18 =
23/36