3.1 & 3.2
Write two comparison sentences for the equation.
18 is _____ times as many as _____. 18 is _____ times as many as _____.
18 is 2 times as many as 9.
18 is 9 times as many as 2.
Estimate the product.
2 × 903
1,800
Find the product
728 × 9
6,552
Find the product.
19 × 6
114
Find the product.
3 × 497
1,491
Write an equation for the comparison sentence. 20 is 5 times as many as 4. 20 = _____ × _____
20 = 5 x 4
Find two estimates that the product is between.
8 × 32
240 and 320
Find the product
4,221 × 8
33,768
Find the product.
73 × 7
511
Which expression does not belong with the other three?
(4 × 50) + (4 × 5)
2 × (2 × 55)
(4 × 2) × 5
(4 × 60) – (4 × 5)
(4 × 2) × 5
Write an equation for this sentence.
40 is 8 times as many as 5.
40 = 8 × 5
Find the product.
73 × 6
438
Which three numbers are the partial products that you add to find the product of 518 and 2?
100
200
16
1,000
14
20
16
1,000
20
Find the product.
402 × 3 =
1,206
A rectangle is 3 centimeters wide. The rectangle is 29 centimeters longer than it is wide. What is the area of the rectangle?
96 square centimeters
Find the missing factor.
_____ × 800 = 6,400
8 x 800 = 6.400
Find the product.
459 × 5
2,295
Write the multiplication equation represented by the expression. (2,000 × 7) + (80 × 7) + (6 × 7)
2,086 x 7
Compare.
454 × 3 _______ 313 × 4
>
You, Newton, and Descartes each make 9 bracelets with 26 beads on each bracelet. How many beads do you, Newton, and Descartes use in all?
702 beads
Find each product.
5 × 2 = _____
5 × 20 = ____
5 × 200 = ____
5 × 2,000 = ____
5 × 2 = __10___
5 × 20 = _100___
5 × 200 = _1,000___
5 × 2,000 = _10,000___
Newton wants to buy 5 video games. Each video game costs $49. Newton has $250. Does he have enough money to buy the video games?
yes
Which four numbers are the partial products that you add to find the product of 6,523 and 3?
18,000
1,500
1,800
150
60
9
9
60
1,500
18,000
Compare.
6 × 789 _______ 2 × 2,367
=
A school has 6 hallways. Each hallway has 128 lockers. 510 lockers are blue. 553 lockers are in use. How many lockers are not in use?
215 lockers