Expressions - Substitution (Year 7)

If a=2 and b=3, evaluate 7ab + b

If x=7, evaluate 3x +4 -x

If t=2, evaluate (6 / t) +2

If x=5, evaluate 2x

If a=2 and b=3, evaluate 2a + 4

If a=2 and b=3, evaluate 5a - 2b

If a=9, b=3 and c=5, evaluate 3c^2

If a=2 and b=3, evaluate a + b

If x=7, evaluate 2x + 4

A number is substituted for b in the expression 7+b and gives the result 12 . What is the value of b ?

If x=5, evaluate 7x + 3(x-1)

If a=9, b=3 and c=5, evaluate a^2 - 3^3

If a=2 and b=3, evaluate 2 (3a + 2b)

If a=2 and b=3, evaluate 3a - 2

If x=5, evaluate 2(x+2) + x

If t=2, evaluate t+3