Prime and Composite
Which numbers in the 20's are prime?
23 and 29
375
What is 78 divided by 42
1 remainder 36
A cockatiel eats 2 grams of food per day. How many grams of food does a cockatiel eat for a week?
14 grams
what are the first five multiples of 6
6, 12, 18, 24, and 30
Some of these numbers are prime numbers; find them!
21, 22, 7, 3, 2, and 9
3,7
What is 29 times 47?
1,363
What is 94 divided by 14
6 remainder 13
Maria had picked up 14 baskets of apples. Each basket had 43 apples; how many apples does Maria have in all?
602 apples
What are the factors of 99?
1, 9,11, 99,33 and 3
Which of these numbers are composite?
27, 3, 2, 14, and 28
27, 14, 28
What is 532 times 15 using the area model method?
7,980
What is 95 divided by 45?
2 remainder 5
Lin has 2 dogs. Eli has 6 times as many dogs as Lin, and Sarah has 5 times as many dogs as Eli. How many dogs does Sarah have?
Sarah has 60 dogs!
(hard to believe)
What are the first five multiples of 12?
12, 24, 36, 48, and 60
How many number in the 30's are Composite
6 numbers
What is (2000+5) divided by 7?
286 remainder 3
What is 108 divided by 23?
4 remainder 16
There are 72 boxes, and each box has 27 paperclips. How many paperclips are there in all?
1,944
What is one multiple of 9 that if multiplied by 9 is 54?
6
How many numbers are Composite until 50?
34 numbers
596 x 681
405,876
What is 275 divided by 17?
16 remainder 3
Mason had 7 folders. Each folder had 17 papers, and his teacher gave him 7 more papers. How many papers does Mason have in total?
126 papers
what are the first five multiples of 36
36, 72, 108, 144, and 180