SUM
6+(2.10)
236
12.4 - 43.2
-30.8
Solve 3x + 7 = 22 in your head.
x = 5
(3x)(4x+2)
12x^2+6x
What is 18 × 6?
108
52+3
55
-18.5 + 42.7
24.2
5x - 8 = 27 in your head.
x = 7
(-6)(8)
-48
What is 144 ÷ 12?
12
66+4
70
56.8 - 79.3
-22.5
4x + 9 = 33 in your head.
x = 6
(-9)(-7)
63
What is 25% of 200?
50
200000+300000
500000
-34.6 + 18.9
-15.7
6x - 5 = 31 in your head.
x = 6
4x(3x+5)
12x^2+20x
What is 225 ÷ 15?
15
-2y+10+-4
Y=7
27.5 - 64.8
-37.3
7x + 4 = 39 in your head.
x = 5
(x+4)(x+6)
x^2+10x+24
What is 125 − 68?
57