# Tuvalu/Maths/Topic 1: Numbers

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# 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

- Add and subtract 4-digit number including two decimal places. 26.51 + 11.32
- 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

- Revisit work on addition and subtraction of Whole and decimal numbers

- 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.

eg 14.42 $25.10

+21.33 -$12.08

- Add and subtract using whole and decimal numbers including money.

a) $23.35 b) $67.75 + $16.42 - $42.58

- 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.