Show:
Rounding
BEDMAS
BEDMAS
Squares and Roots
Substitution
100
Round to the nearest one 3.14159
3 (Mathematicians don't like it when you round pi!)
100
- 4 + 10
6
100
(-4 -1)^2
25
100
√(49)
7
100
Evaluate 4x - 3 when x = 3
9
200
Round to the nearest hundred 667.345
700
200
-10 + 3
-7
200
(-3)x2
-6
200
√(25 -16)
3
200
Evaluate x ÷ 3 - 14 when x = 15
-9
300
Round to the nearest hundredth 1.618
1.62 (This is the golden ratio)
300
3 + (+4)
7
300
(-6)x4÷3 - 2
-10
300
(√36 - √16)÷(4-5)
-2
300
Evaluate 4a - 10 when a = -2
-18
400
Round to the nearest thousandth 2.71828
2.718 (This is called Euler's number - e )
400
7 - (-10)
17
400
[5 - 4]^50 ÷ (-60 + 59)^100
1
400
√(188-44) - √36
6
400
Evaluate 4a^2 - 3b when a =3 and b =2
30
500
Round to the nearest hundred 42, 465.25
42 400
500
3 - (-3) + (-4)
2
500
(-4)x(-3) - 6÷(6 - 3)
10
500
√[3 - (-6)] ÷[-1 + (+4)]
1
500
Evaluate (2s - 3t) ÷ (t -s) when s = -2 and t = -1 *** This is tricky!
-1