Estimating
Multiplication
Division
Draw it!
Miscellaneous
100
Rounding your divisor to 10 can help you estimate. How can you estimate 2340 ÷ 8 ?
234
100
Solve 28 x 39 using partial products
72
180
240
600
= 1,092
100
96 marbles were placed in a bag. Half of the marbles were blue. How many marbles were not blue?
48 marbles were not blue
100
Draw a rectangular prism with a length of 4cm, a width of 3cm and a height of 12cm. Then, find the total volume of the prism.
144 cubic cm
100
Explain the difference between area and volume. How do you find each of them?
Area is the space inside a 2-dimensional figure. Volume is the amount of space a 3-dimensional figure takes up.
A = L x W
V = L x W x H
200
Use friendly numbers to divide 353 ÷ 6. What is your estimate?
Answers may vary but could include:
360 ÷ 6 = 60
350 ÷ 5 = 70
200
What is the product that the blue value is representing?
57 x 20
200
Describe how you would break apart 2,736 to solve 2,736 ÷ 9. Then, solve
(2,700 ÷ 9) + (36 ÷ 9) = (300 + 4) = 304
200
Draw an area model to represent 478 x 562. Then solve
268,636
200
A garden has an area of 3,200 square feet. If the length is 80 feet, what is the width?
40 feet wide
300
Use friendly numbers to estimate 6,547 ÷ 23
Answers may vary but could include:
6,600 ÷ 20 = 330
6,000 ÷ 20 = 300
6,900 ÷ 23 = 300
300
Solve 697 x 37 using the standard algorithm
25,789
300
2,782 dancers participated in the Fall competition. If they each danced with a partner, how many groups of dancers were there?
1,391 groups
300
Draw a rectangle with an area of 1,260 square inches and a width of 12 inches. Then, find the missing dimension
The length is 105 inches
300
At Thanksgiving, a grandma wanted to cook 3 full turkeys for her extended family. The recipe calls for 8 cups of stuffing inside each turkey. At the Grand, each stuffing box contains 6 cups of mix. How many boxes will Grandma need to buy in order to cook her Thanksgiving meal?
4 boxes of stuffing
400
Estimate the product of 785 and 39
Answers may vary but could include:
800 x 40 = 32,000
800 x 50 = 40,000
750 x 40 = 30,000
400
314 x 1 and 314 x 20
= 6,594
400
Create 3 expressions that are equivalent to 1,230 ÷ 3
Answers may vary but could include:
(1,200 ÷ 3) + (30 ÷ 3)
(1,000 ÷ 3) + (200 ÷ 3) + (30 ÷ 3)
(600 ÷ 3) + (600 ÷ 3) + (30 ÷ 3)
400
Draw a rectangular prism with a height of 7 inches and a volume of 336 cubic inches. Then, list the possible dimensions for the length and width
Base = 48
(L = 12 and W = 4)
(L = 8 and W = 6)
other options may work
400
Rosie ran 3 miles a day for 13 weeks. How many miles did she run?
273 miles
500
A restaurant estimated that they would have 500 customers this weekend. Their goal was to make $10,000 in two days. If each customer averaged a cost of $13, would the restaurant meet their goal?
No - costumers would need to average a cost of $20 per person
500
Jean walked along the beach and collected 14 seashells every 10 minutes. If Jean collected seashells for 5 hours a day for 3 days, how many seashells did she collect in all?
1,260 shells
500
A road is 248 miles long. If you walked 1/4 of the road, how many miles did you walk?
62 miles
500
Draw a die with a volume of 27 cubic centimeters. Then, find and list the missing side lengths
Each side length is 3 cm.
(3 x 3 x 3 = 27)
500
A baker made 3,824 cupcakes for an event. Each table needed 1 batch of cupcakes. Any leftover cupcakes would be donated to a food shelter. If each batch made 6 vanilla and 6 chocolate cupcakes, how many cupcakes were donated to the food shelter?
8 cupcakes were donated
(318 r8)