Year 1 Lesson 14 In-class Exercise
Name ________________________
1). Evaluate these expressions for:
a = 9,
b = 3,
  c = - 27
Rewrite the whole expression with numbers first!!
(be really careful with the minus sign on "c")
a). a + c = ____ + ____ = ____
b).
= ____ / ____ = ____
c).
= ____ X ____ / ____ = ____
2). Solve these equations (Find x):
a). x + 4 = 16
x = _________
b). 2x + 5 = 19
x = _________
c). 15 - x = 8
x = _________
d).
x = _________
e).
50 - 2x = 0
x = _________
f).
9x - 20 = 7
x = _________
3). Using X as your variable, write an expression for each of these phrases:
Phrase
Expression
a). two times a number
b). seven plus a number
c). half of a number
d). a number increased by one
e). eight times a number minus one