## Year 1 Lesson 11 In-class Exercise

**
Name ________________________**

1). Evaluate these expressions for a = 3, b = 9:
a). ** **a + b = + = |
b) .** **b - a = - = |

c). ** **3a = X = |
d). ** **3a + b = + = |

e). ** **a - b = - = |
f). ** **ba = X = |

g). ** **b/a = / = |
h). ** **3a + 2b = + = |

i). ** **5a - b = - = |
j). ** **2ab = 2 X X = |

2). Evaluate these expressions for a = 7, b = 3, c = 14:
a). ** **ab = = |
b). ** **3a/b = = |

c). ** **ab - c = = |
d). ** **c/a = = |

e). ** **b - a = = |
f). ** **abc = = |

g). ** **4 a - 3 b = = |