ESTIMATING Products
and
Zero Trick for Multiplication
and
Zero Trick for Multiplication
What is 3 x 70?
210
4 x 82
328
12 x 54
648
A bookstore sells 138 books each month. How many books do they sell in 4 months?
552 books
What is 40 x 800?
32000
93 x 6
558
52 x 40
2,080
Maria bakes 24 muffins each day for 12 days. How many muffins does she bake in all?
288 muffins
ESTIMATE, then solve.
52 x 61
3000
5 x 328
1,640
74 x 38
2,812
A gardener plants 26 rows of flowers with 15 flowers in each row. How many flowers does she plant?
390 flowers
72,000
739 x 8
5,912
27 x 543
14,661
Liam buys 3 packs of pencils. Each pack has 48 pencils. He gives 15 pencils to his class. How many pencils does he have left?
129 pencils left
ESTIMATE, then solve.
212 x 994
200,000
9 x 4,062
36,558
92 x 708
65,136
A baker makes 325 cookies each hour for 3 hours. After the cookies are done, he sends 510 cookies to Store A to be sold. The rest go to Store B. How many cookies did Store B receive?
465 cookies were sent to Store B.