1-digit by 2-digit multiplication
Number Stories
What Operation?
Mixed Bag
Vocabulary
100
3 x 13
What is 39?
100
Elephant babies weigh eight pounds at birth. If a mother elephant gave birth to five baby elephants, how many pounds would they weigh altogether?
What is forty (40) pounds?
100
Santa bought six hats for $5 each. If he has $25 in his budget, can he pay for the items?
What is no, because 6 hats costs $30, which is more than $25.
100
Olaf has 12 friends. He has 4 gifts to give each friend. This is how many gifts he gives away in all.
What is 48?
100
To find an answer that is close to the exact amount.
What is estimate?
200
51 x 7= ?
What is 357?
200
Mrs. Willie is buying 5 books. Each book costs $19. How much do all of the books cost together?
What is $95.00.
200
Mrs. Claus went and bought some ribbon to wrap presents. She needed 80 rolls, but she only had 36. How many more rolls does she need?
What is 44?
200
The population of Greenpoint in expanded form is
30,000 + 4,000 + 700 + 10 + 9.
In standard form this is written as :
What is 34,719?
200
The value of a digit in a number, based on the location of the digit.
What is place value?
300
22
x 4_
?
What is 88?
300
Santa owns two workshops and there are 64 elves in each workshop. How many elves Santa has altogether?
What is 128 elves?
300
Santa needed to go to 900 homes before midnight. He had only gone to 472. This is how many more homes he needs to get to before midnight.
What is 428?
300
Research says that if children read for 30 minutes each day, their reading skills will improve. If you read for 30 minutes everyday this week, how many minutes will you have read by the end of the week?
(hint:there are 7 days in a week).
What is 210 minutes?
300
What is a factor?
A number that is multiplied by another number to find a product.
factor x factor = product
3 x 4 = 12
400
12 x 4 = ?
What is 48?
400
Rudolph and Dixon got into a disagreement about how heavy Santa’s sleigh was. If there were 43 presents in the sleigh and each present weighed 3 pounds, this is how heavy the sleigh was.
What is 129 pounds?
400
There are three elves in each of Santa's four factories. Each elf has eight presents to make. About how many presents need to be made total?
What is 96 presents?
400
True or False:
4 x (3 x 2) = (4 x 3) x 2
What is true?
The Associative Property of Multiplication states that you can group factors in different ways and still get the same product.
400
The property that states that when the order of two factors is changed, the product is the same.
Example:
7 x 5 = 5 x 7
What is the Commutative Property of Multiplication?
500
80 x 2 = ?
What is 160?
500
Frosty the Snowman and Olaf are made of snow. Each one of them weighs 51 pounds. How much do they weigh together if you add a hat on each of their heads that weighs 3 pounds?
What is 108 pounds?
51 + 3 + 51 + 3 = 108
500
Mrs. Claus put ten pecans on each of the 64 pies she made for the elves. This is how many pecans she used to make all the pies.
What is 640 pecans?
500
Use mental math to solve the following problem.
400 x 5 = ?
What is 2,000?
500
The property that states that you can group factors in different ways and still get the same product.
Example: 3 x (4 x 2) = (3 X 4) X 2
What is the Associative Property of Multiplication?
600
64 x 2= ?
What is 128?
600
We want to take a field trip to the movies. Each ticket costs $7. There are 20 students in the class. This is how much will it cost for all the students to go to the movies.
What is $140?
600
Mr. Schulman sells 100 bottles of water a week. This is how many bottles of water he sells in one year.
(hint:there are 52 weeks in a year).
What is 5,200 bottles of water a year?
600
There are 21 tables in the lunchroom. Each table can sit 9 students. This is how many students can be seated at lunch at one time.
What is 189 students?
600
The answer to a multiplication problem.
What is a product.