Unit 1
Teresa spent 40 minutes riding her bike to the park. Then she rode her bike to the park for 25 minutes. What equation would you use to figure out how many minutes Teresa spent riding her bike?
40 + 25 = n
A: 20 + 5 = n
B: 20 x 5 =n
C: 20 - 5 - n
D: 20 x n = 5
B: 20 x 5 = n
What is 45 rounded to the nearest 10?
50
350 grams
9 + 8 = 10 + n
n = 7
How many ml in 1 liter?
1,000ml
Alysa has $85 in her savings account and Dylan has $38 in his savings account. How much more money does Alysa have than Dylan?
$47
Pablo watched people getting on and off the bus. He saw 8 people wearing coats. Each coat had 5 buttons. How many buttons did Pablo see?
40 buttons
What is 247 rounded to the nearest hundred?
200
How would you measure the volume of an aquarium?
A: liters
B: meters
C: milliliters
A: liters
8 x 2 = 2 x n
n = 8
Quadrilateral
Frank is growing a plant. Each week, he measures how tall the plant is. This week, his plant is 63cm tall. That is 18cm taller than it was last week. How tall was the plant last week?
45cm
How can you use 2 x 8 to find 4 x 8?
Doubling the number of groups also doubles the product (answer).
I am on page 26 of my book. How many more pages do I have left to read if there are 292 pages in the book?
266 pages
What does the short hand on the clock tell you? What does the long hand on the clock tell you?
Short Hand: hour
Long Hand: minutes
2 x 6 = 4 x n
How many 1/4 pieces does it take to make a whole?
4
Sam drew a line that was 48cm long. Then he decided he wanted a longer line, so he added some more to it. When he was finished, his line was 73cm long. How many cm did he add to his line?
25cm
Pam walked to the park. She saw a trash can that was 3ft tall. Then, she saw a lamppost that was 4 times as tall as the trash can. How tall was the lamppost?
12ft
Ashley and Alex collected soda cans to recycle. Ashley had 275 cans and Alex had 168 cans. How many cans did they have in all?
443 cans
What does the numerator in a fraction tell you? What does the denominator in a fraction tell you?
Numerator: number of parts we have out of the whole
Denominator: how many equal parts there are in total
3 x 25 = n
n = 75
If there are 3 pieces of cake and I ate 2 pieces, how much of the cake did I eat?
2/3 of the cake
Ms. Flynn has 215 math and science books in her classroom library. Of the books, 93 of them are math books. How many are science books?
122 science books
4 bags of dog food cost $20 altogether. How much does each bag of dog food cost?
$5
The school had 253 students. Over winter break, 64 students moved away but 16 new students moved in. How many students are now in the school?
205 students
Erika left her house at 3:15. She went running for 30 minutes. What time did she finish running?
3:45
100 / 5 = n
n = 20
How do you know when you round a number up or down?
Answers Vary