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15
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Tiles are arranged on each side of the line to represent an equation. What is the equation?
<i>x + 2</i> = 1, <i>x = -1</i>
<i>2x</i> = -1, <i>x = -1</i>
<i>2x</i> = 1, <i>x = 1</i>
<i>x - 2</i> = -1, <i>x = 1</i>
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eraser
Reset score!
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×
star
Double points!
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×
fairy
Take points!
5
10
15
20
25
×
baam
Lose 20 points!
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15
×
Which are true about the process of solving equations?
The variable should be isolated.
The equation should stay balanced.
Addition is always used.
Inverse operations are performed
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15
×
What is the equation and solution for: "Five more than a number is 15"?
5<i>x</i> = 15, <i>x</i> = 10
<i>x</i> + 5 = 15, <i>x</i> = 10
5<i>x</i> = 15, <i>x</i> = 3
<i>x</i> + 5 = 15, <i>x</i> = 3
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15
×
Which equation should you write to solve this problem?
4(5) + x = 25
4x+5=25
5x+4=25
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trap
No points!
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seesaw
Swap points!
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gift
Win 10 points!
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thief
Give points!
5
10
15
20
25
15
×
Tim saved $12.00 from his allowance, half of what he received. What was his total allowance?
$21.50
$24.00
$12.00
$26.00
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heart
Other team wins 5 points!
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star
Double points!
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fairy
Take points!
5
10
15
20
25
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thief
Give points!
5
10
15
20
25
15
×
Solve this equation: x + 3 = 9
3
6
5
12
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15
×
A balance has 8g and 4g on the left, and 7g and an unknown ont he right. What is the unknown?
2 g
5 g
3 g
11 g
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15
×
What is the mass needed to balance the masses on this 2-pan balance?
6 g
16 g
10 g
11 g
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banana
Go to last place!
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seesaw
Swap points!
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shark
Other team loses 25 points!
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banana
Go to last place!
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15
×
The 2 pans of the scales are balanced. Find the value for the unknown mass B.
47 g
5 g
11 g
13 g
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15
×
Solve.
10
14
16
12
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15
×
What is the equation for the starting temperature of a temperature drop of 9°C to -3°C?
<i>x </i>+ 9 = 3, <i>x</i> = -6
<i>x </i>+ 3 = 9, <i>x</i> = 6
<i>x </i>- 9 = -3, <i>x</i> = 6
<i>x </i>- 3 = -9, <i>x</i> = -6
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15
×
The 2 pans of the scales are balanced. Find the value for the unknown mass A.
11 g
3 g
47 g
5 g
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