Tuvalu/Maths/Topic 1: Numbers

=Objective=

Student should be able to add and subtract two decimal places in the context of measurement, including money.

=Topic=

Addition and Subtraction of Decimals

=Outcomes=


 * 1) Add and subtract 4-digit number including two decimal places. 26.51 + 11.32
 * 2) Add and Subtract money (4-digit number)  eg. $34.56 + $12.22

=Resources=

Mathematics Class 8. Teachers' Handbook Syllabus Outline Page 15

=Duration=

40 minutes (1 lesson) =Lesson Procedure=


 * 1) Revisit work on addition and subtraction of Whole and decimal numbers

eg 14.42     $25.10 +21.33    -$12.08
 * 1) Carry out task on addition and subtraction of decimal numbers ranging from simple to more complex.Make sure the decimal points are underneath one another.

a) $23.35       b)  $67.75 + $16.42         - $42.58
 * 1) Add and subtract using whole and decimal numbers including money.


 * 1) Complete the following exercises:

a) $43.76       b) $48.34          c) $67.54        d) $263.30 + $12.34        + $31.25           - $35.12         - $131.46

e) Teima bought 4 exercise books at $1.00 each and 1pkt of pencil colours at $2.00. How much did she spend at the shop?

f) Temu bought 1bag of rice for $37.50. What is her change if she gave the shopkeeper a $50. note?

=Evaluation= Students to work out correct answers to exercise on the blackboard. Go over the exercises for revision. Identify students who have not achieve the lesson and give extra help.