The first night of the play 157 people attended. The second night only 125. About how many people attended altogether?
300
200
If g = 15
What is 29+g?
44
200
$4.67 + $3.65
$8.32
200
What are the missing facts for this fact family:
20 - 15 = 5
5 + 15 = 20
20 - 5 = 15
15 + 5 = 20
200
Estimate the sum
167 + 574
200 + 600
200
Jake had $50.00 to spend at Gamestop. He bought a used game for $19.99. Does he have enough for a controller that costs $25.00, or will he have to wait to get them both? (His mom will pay the tax)
Yes, he can buy both!
300
r + 65 = 365
Find the value of r
r= 300
300
55, 871 + 42, 963 =
98,834
300
Write the fact family for 12, 2, 14
12 + 2 = 14
2 + 12 = 14
14 - 2 = 12
14 - 12 = 2
300
Estimate the sum
2,357 + 8, 805
11,000
300
Marah, Hattie,and Brooke worked together to bake cookies for a bake sale. Marah baked 57 chocolate chip cookies. Hattie baked 178 peanut butter cookies. Brooke baked 123 sugar cookies. About how many cookies did they have to sell at the bake sale?
360
400
816 + y = 886
What is the value of y
y = 70
400
$316 + $4.48 + $23.15 =
$343.63
400
What is the property of addition that explains the relationships in a fact family?
Commutative
400
950,122 + 49,912
1,000,000 + 50,000 = 1,050,000
400
Cole and Max needed to earn at least $400.00 to get a new mower for their lawn care service. Here are their books for the summer:
$75.50 in May
$145.00 in June
$165.00 in July
$55.00 in August
Cole estimated that they had enough. Do you agree with his estimation?
80 + 100 + 200 + 60 = 440
500
n - 146 = 304
n = 450
500
617,909 + 43, 055 + 101,507 =
762,471
500
What is the property of addition that allows numbers to be grouped differently, but you still get the same answer? Finish the example to demonstrate this property:
(13 + 94) + 7 =
13 + (94 + 7)
500
In this problem 78 + 98 will the estimated sum be greater or less than the exact answer. Explain why?
The estimated sum will be greater than the exact answer because each number was rounded up.
500
Ms. McMinn adds 18 grades before finding the average score for your math report card. Should she estimate the sum before she divides or get an exact answer? Why?
Exact answer because estimates should only be used when you want a quick idea and accuracy is not very important.