Middle School A
6x(12÷4)+72÷8-9
18
Simplify: (-3)(-9)(7)(-5)
-945
What is 0.9% as a decimal?
.009
−6x+1=49
If a hen and a half lay an egg and a half in a day and a half, how many eggs will half a dozen hens lay in half a dozen days?
Two Dozen. If you increase both the number of hens and the amount of time available four-fold, the number of eggs increases 16 times. 16 x 1.5 = 24.
5(3+3)4x6
720
Simplify using the correct order of operations: -13+4(x-10)
4x-53
What is 79% of 100?
79
6(x2+9)+3x When x=3
x=117
When Miguel was 6 years old, his little sister, Leila, was half is age. If Miguel is 40 years old today, how old is Leila?
37 years old
[3x7(8+17)]÷5
105
Simplify by combining like terms x2-y-(x+y)
x2-x-2y
What is 45% of 20?
9
Solve x2+17x+66=0
x= -6 , -11
How can you add eight 8's to get the number 1,000 (only using addition)
888+88+8+8+8
Solve 3(3+7)-42÷2
22
Simplify 7−a+6+c−6a2+3a2
-3a2−a+c+13
Find 10% of 210
21
x2+10x+25=0
x=-5
One brother says of his younger brother: “Two years ago, I was three times as old as my brother was. In three years’ time, I will be twice as old as my brother.” How old are they each now?
The elder is 17, the younger 7. Two years ago, they were 15 and 5 respectively, and in three years’ time, they will be 20 and 10.
-1x[(6+5)x3)÷11]-2x12
-27
Simplify 2x2+8(x−1)-5
2x2+8x-13
5% or $80
4
(4x−24)(x+96)=0
x= 6 , -96
What is the smallest number that increases by 12 when it is flipped and turned upside down?
The answer is 86. When it is turned upside down and flipped, it becomes 98, which is 12 more than 86.