Estimate
Mixed part 1
Mixed part 2
Multiples of 10's
Mixed part 3
100
A landscaper purchases eleven plants for $29 each. Estimate how much he spent before taxes.
$300
100
To solve for 51 × 4, Tamara used mental math by thinking about 51 + 51 + 51 + 51. Which best describes the strategy she used to solve?
repeated addition
100
What is the value of 6 × 40?
240
100
6 × 60
360
100
Chris read 20 pages of a novel each day for 9 days during summer break.
How many total pages did Chris read during summer break?
180
200
There are 16 steps between every floor of an office building. If there are 14 stories, estimate the total number of steps in the building.
about $200
200
Katie read 20 pages of a book each day.
How many pages will she read in 4 days?
80 pages
200
Which expression can help solve 30 × 7?
3 × 7 × 10
3 × 7 + 10
3 + 7 × 10
3 × 7 × 10
200
9 × 60
540
200
If you know that 48 ÷ 6 = 8, what other fact can you get from this problem?
6 × 8 = 48
300
There are 77 students in the 3rd grade of Simpson Elementary School. If every 3rd grader is given a bag of gummy bears, where each bag contains 22 pieces. Estimate the total number of gummy bears given to all the 3rd graders.
1,600
300
Knowing that 9 × 4 = 36 and 9 × 3 = 27, one can find
9x6
9x7
9x9
9x7
300
Which set of steps shows how to find 3 × 4 × 2?
3 + 4 = 7, then 7 × 2 = 14
3 × 4 = 12, then 12 × 2 = 24
3 × 4 = 12, then 12 × 2 = 24
300
5 x 70
350
300
If we know that 72 ÷ 8 = 9, what does that tell us?
8 × 9 = 72
400
A bicycle company needs to ship 328 bicycles across country. If they can fit 50 bicycles in each truck, about how many trucks will the company use?
about 7
400
A student knows that 8 × 5 = 40.
Which equation shows how the commutative property of multiplication can be used to find the same product?
- 5 × 8 = 40
- 8 × 6 = 48
- 40 ÷ 5 = 8
- 8 + 5 = 13
5 × 8 = 40
400
465 × 3 = ?
1,395
400
7 x 30
210
400
According to the model, what is 30 ÷ 6?
5
500
Spooner's Donut Shop creates 38 donuts a day. They make donuts every day of the week. About how many donuts are made by Spooner's in a week?
about 280
500
There are 8 bouquets of flowers. Each bouquet has 10 flowers.
How many flowers are there in all?
80
500
There are 9 pages in a sticker album and each page has 40 stickers. How many stickers are there in all?
360
500
8 x 80
640
500
Barbara works in a bakery. She puts 12 blueberries in each blueberry muffin she makes. How many blueberries does Barbara need to make 8 blueberry muffins?
96