Multiplication
A flashlight requires 2 batteries to function. How many batteries would 7 such flashlights require?
7 flashlights would require 14 batteries.
(2 x 2) + 10 =
14
Round 524 to the nearest hundred
500
961
- 472 =
489
What is a factor
A factor is one of the numbers being multiplied.
Andrew is having his friends over for game night. So, he decided to prepare snacks and games. He started by making mini sandwiches. If he has 4 friends coming over and he made 3 sandwiches for each one of them, how many sandwiches did he make?
Andrew made 12 sandwiches.
(7 + 3) x 6 =
60
Round 956 to the nearest ten
960
579
- 292 =
287
The term "each" refers to which operation?
Multiplication
11 x 11 =
121
(5 x 10) + 27 =
77
Find the actual amount and then the estimated amount by rounding the addends to the nearest 10.
(Tip: Do not round the sum)
329 --->
+ 561 --->
329 330
+ 561 = 890 + 560 = 890
692
+ 735
1,427
A diagram that includes rows and columns is called an
Array
Lucy uses 1 ounce of butter to bake 3 cookies. How many cookies can she bake with 21 ounces of butter?
Lucy can bake 7 cookies.
9 boys in Sr. Ruiz's class went outside for recess. They wore their gloves. Ryan and Rehaan each lost a glove while outside. How many gloves did the boys bring back into the classroom?
The boys brought back 16 gloves to the bathroom.
Find the actual amount and then the estimated amount by rounding the addends to the nearest 10. (Tip: Do not round the sum)
369 --->
+ 592 --->
369 ---> 370
+ 592 ---> 590
= 961 960
251
+ 761 =
1,012
The answer to a multiplication problem
Product
Srta. Marte watches 10 netflix episodes a day. How many episodes does she watch in 7 weeks?
Srta. Marte watches 490 episodes in 7 weeks.
On Saturday, 4 groups of people went to the restaurant at the ski resort. Each group had 5 people in it. Everyone ordered a cup of hot chocolate. Kayla, Reece, and Anya each ordered an extra cup of hot chocolate. How many cups of hot chocolate did the people drink that day?
They drank 23 cups of hot chocolate all together.
Round 5,293 to the nearest hundred
5,300
973
+ 985 =
1,958
What is the rule for parentheses?
Do what is in the parentheses first!