Estimation
A precise estimate of the product of 47 and 36.
What is 1,500?
The product of 12 and 15.
What is 180?
10 to the power of 3.
What is 1,000?
36 candies in 5 boxes.
What are 750 notebooks?
Rounding 268 to the nearest ten and multiplying by 5.
What is 1,350?
The product of 23 x 17 using the area model
What is 391?
100 as a power of 10.
What is 10 squared?
Sarah read 24 pages each day for 5 days.
What are 120 pages?
An estimation of 678 x 4 for easier calculation (2 numbers).
What is 680 x 5?
The partial products of 34 and 26.
What are 600, 180, 80, 24?
5000 in terms of powers of ten.
What is 5 x 1,000 or 5 x 10 to the 3rd?
A farmer has 12 rows of corn with 15 plants in each row.
What are 180 plants?
A multiplication problem to quickly estimate the product of 32 and 19.
What is 30 x 20?
The product of 56 and 48 using the standard algorithm.
What is 2688?
The product of 6 times 10 to the power of 2.
What is 3,600?
A book costs $25. You buy 4 books.
What is $100?
Definition: the process of rounding numbers and performing operations to determine a reasonable solution.
What is estimation?
The product of 125 by 24 using any method.
What is 3,000?
Definition: Making numbers smaller or larger by x10 over and over to make a problem easier to solve.
What is utilizing powers of 10?
A school has 250 students. Each student needs 3 notebooks.
What are 750 notebooks?