Mr. Luca bought 35 notebooks. Each notebook has 61 pages in it. Use rounding to estimate the total numbers of pages in the notebooks and solve.
40 x 60 = 2,400 pages
The pizza parlor used 40 pieces of pepperoni on each large pizza. The pizza parlor made 80 large pizzas. How many pieces of pepperoni did they use?
40 x 80= 3,200
There are 23 students in Mrs. Lee's class. Each students has a box containing 32 crayons. Use rounding to estimate the total number of crayons in Mrs. Lee's class.
20 x 30 = 600 crayons
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