What is the name of the answer for a multiplication problem?
Product
100
123 * 9 =
1,107
100
56 * 88 =
60 * 90 = 5,400
overestimate
100
Katrina found that the product of 49 and 805 is 3,165. How would finding an estimate help her know that the answer is NOT reasonable?
Using estimation, she would find 50 * 800 = 400,000. 3,165 is not close to 400,000.
200
The result of using lesser numbers to estimate a sum or product is called an
underestimate
200
456 * 8 =
3648
200
712 * 51 =
700 * 50 = 35,000
underestimate
200
Ricky has to plant peach trees into 56 rows. He can plant 8 peach trees in each row. How many peach trees will he plant on his peach farm?
448 peach trees
300
What is the term used for a letter that represents a number in an expression or an equation?
variable
300
35 * 96 =
3,360
300
999 * 313 =
1000 * 300 = 300,000
underestimate
300
Mr. Peters has enough pumpkin seeds to cover an area of 450 square feet. His garden measures 18 feet by 22 feet. Does he have enough pumpkin seeds to fill the whole garden? Explain.
Yes, the garden is 18 * 22 and that equals 396 square feet. He has enough to cover 450 feet and 450 feet is more than 396 feet.
400
The ______________________ are products found by breaking one of two factors into ones, tens, hundreds, and so one, and then multiplying each of these by the other factor.
partial products
400
165 * 87 =
14,355
400
6712 * 698 =
7000 * 700 = 4,900,000
overestimate
400
Jane was collecting soda tabs for recycling. In 7 months, she had collected 230 bags with 94 tabs in each bag. How many total tabs did she have?
21,620
500
What term do we use to find if our product is reasonable?
estimate
500
8134 * 78 =
634,452
500
901 * 813 =
900 * 800 = 720,000
underestimate
500
Warren County is planning a trip for all 5th grade students to go to the Museum of Natural History. There are 45 busses going on the trip. Each bus holds 75 kids. How many students will be going on the trip.