Addition and Subtraction
71,983
List the first 10 multiples of 2.
List the factors for 19 IN ORDER. Write if it is prime or composite.
Make a t-chart first to make sure you get all your factor pairs.
19- 1, 19
19 is PRIME.
Alison earned $6,323 last year at her summer job. This summer she earned $7,498. How much money did she make in all?
Alison made $13,821.
What is the 10th multiple of 3?
30
683,191 - 93, 482=
589,709
What is the 7th multiple of 4?
The 7th multiple of 4 is 28!
List the factors for 20 IN ORDER. Write if it is prime or composite.
Make a t-chart first to make sure you get all your factor pairs.
20 is COMPOSITE.
Joey earned $6,481 last year at his summer job. This year he earned $4,329. How much more money did he make last summer?
Joey earned $2,152 more dollars last summer.
List the factors of 27 in order.
1, 3, 9, 27
382,183 + 976,124 =
1,358,307
What is the LCM between the numbers 2 and 5?
List the first 7 multiples of each and then find the LEAST COMMON MULTIPLE.
2- 2, 4, 6, 8, 10, 12, 14....
5- 5, 10, 15, 20, 25, 30, 35, 40....
LCM= 10
What is the Greatest Common Factor (GCF) between the numbers 6 and 12?
Make a t-chart for 6 AND 12 and then list the factors and find the GREATEST factor they have in common.
6- 1, 2, 3, 6
12- 1, 2, 3, 4, 6, 12
The GCF is 6!!!
The fourth graders in South River had a total number of 193,549 text books in all. The third graders in South River had 192,104 text books in all. What is the difference of text books between the two grades?
The fourth grade had 1,445 more text books than third grade.
What is the only even prime number?
The only even prime number is 2.
50,000 - 48, 471 =
1,529
List the first 10 multiples of 7.
What is the Greatest Common Factor (GCF) between the numbers 24 and 30?
Make a t-chart for 24 AND 30 and then list the factors and find the GREATEST factor they have in common.
24- 1, 2, 3, 4, 6, 8, 12, 24
30- 1, 2, 3, 5, 6, 10, 15, 30
The GCF is 6!!!
Miss Alfano had 9,291 stickers. Miss Robinson had 8,333 stickers. How many stickers do they have combined?
They have 17,624 stickers combined.
Is 9 a prime or composite number?
9 is a composite number because it has two factor pairs. (1 x 9, 3 x 3)
40,008 - 24,713=
15,295
What is the LCM between the numbers 6 and 8?
List the first 7 multiples of each and then find the LEAST COMMON MULTIPLE.
6- 6, 12, 18, 24, 30, 36, 42
8- 8, 16, 24, 32, 40, 48, 56
The LCM is 24!
Write if 50 is prime or composite!
28- 1, 2, 4, 7, 14, 28
COMPOSITE
Daniel made 4,000 hamburgers at McDonalds last year. His coworker, Samuel, made 3,833 hamburgers. How many more hamburgers did Daniel make than Samuel?
Daniel made 167 more hamburgers than Samuel last year.
What is the 7th multiple of 5?