Prime and Composite
Look at the numbers: 6, 11, 14, 17, 20. Which of these numbers are prime?
11 and 17
Calculate the product of 2.5 and 0.4.
1.0
Sarah baked 3/5 of a cake, and Maria baked 1/4 of a cake. If they combine their cakes, how much of the cake do they have altogether?
17/20
Convert 500 grams to kilograms.
0.5 kilograms
Sarah started reading a book at 3:15 PM and finished it at 4:57 PM. How long did it take her to finish the book?
Sarah took 1 hour and 42 minutes to finish the book.
Identify the prime numbers in this set: 3, 8, 13, 16, 19.
3, 13, and 19
Find the result of multiplying 3.2 by 0.6.
1.92
Tom drank 2/3 of a bottle of juice, and Emily drank 5/6 of the same size bottle. How much juice was consumed altogether?
1 1/2
If a pencil is 15 centimeters long, how many millimeters long is it?
150 millimeters
Tom left home at 8:20 AM to go to the park. He returned home at 11:53 AM. How long was he out?
Tom was out for 3 hours and 33 minutes.
Among the numbers: 9, 12, 13, 18, 21, which ones are composite?
9, 12, 18, and 21
Find the quotient of 9.6 and 3.
3.2
Sarah had 3/4 of a pizza, but she gave 1/2 of her share to her friend. How much pizza does Sarah have left?
1/4
A bottle contains 750 milliliters of water. How many liters is this?
0.75 Liters
Emily's soccer practice starts at 4:45 PM and ends at 7:02 PM. How long does her soccer practice last?
Emily's soccer practice lasts for 2 hours and 17 minutes.
Pick out the prime numbers from this group: 2, 5, 10, 15, 20.
2 and 5
Find the quotient of 14.4 and 6.
2.4
A basket contains 5/6 of its original apples. If 1/3 of the remaining apples are taken away, what fraction of the original apples are left in the basket?
1/2
A marathon is 42 kilometers long. How many meters is this?
42,000 meters
A train departs from the station at 9:00 AM and arrives at its destination at 2:48 PM. How long does the train journey take?
The train journey takes 5 hours and 48 minutes.
Which numbers are prime and which are composite in the following set: 7, 10, 13, 16, 19?
Prime numbers: 7, 13, 19; Composite numbers: 10, 16.
If you have 12.6 meters of ribbon and want to cut it into 3 equal pieces, how long will each piece be?
3.2 meters long
Tom had 7/8 of a chocolate bar. He shared 3/4 of his portion with his brother. How much chocolate does Tom have left?
1/8
Emily walks 2 kilometers to school every day. If she walks an additional 750 meters to visit her friend after school, how many meters does she walk in total in one day?
2,750 meters
Jenny starts baking cookies at 3:40 PM. She finishes baking at 5:56 PM. How long does it take her to bake the cookies?
Jenny takes 2 hours and 16 minutes to bake the cookies.