Expressions
Write a numerical expression for the word problem: "Sarah has 20 stickers and puts 5 stickers on each page of her sticker book."
20 ÷ 5
14 - 6 + 3
11
Rewrite 63 as repeated multiplication.
6 ⋅ 6 ⋅ 6
Evaluate: −9+14
5
A student earns 8 points for each assignment they complete. They complete 5 assignments. How many points do they earn?
They earn 40 points.
Write a variable expression that represents "a number increased by 9."
x + 9
20 - 3(4)
8
Rewrite 4 ⋅ 4 ⋅ 4 ⋅ 4 ⋅ 4 using an exponent.
45
Evaluate: 11+(−17)
-6
The temperature is −6°F. It increases by 14 degrees. What is the new temperature?
The new temperature is 8°F.
Write a variable expression that represents "7 times a number, decreased by 4."
7x - 4
2(5+3) − 4
12
Evaluate 102.
100
Evaluate: −15−(−6)
-9
A diver is 18 feet below the surface of the water. She rises 7 feet, then dives 12 feet deeper. What is her final position?
Her final position is 23 feet below the surface.
A student writes 4x to represent "4 more than a number." Is the student correct?
No
18 − 23 + 5
15
What does 53 mean? Write it as repeated multiplication and then find its value.
5 ⋅ 5 ⋅ 5 = 125
Evaluate: (−9)(−5)
A game starts with 10 points. A player loses 4 points on each of 3 turns and then earns 8 points. What is the player's final score?
The player's final score is 6 points.
Write an expression for "three times the difference between a number and 8."
3(x - 8)
3[4+2(5−3)]
24
Find the value of 32 + 24.
25
Evaluate: (−72) ÷ 9 − (−4)
-4
A hiker is at an elevation of 150 feet. She descends 275 feet, then climbs 125 feet. She then descends another 50 feet. What is her final elevation?
Her final elevation is -50 feet.