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Study Guide 1/2 G05 ~ Mathematics
Self-assessment Do you understand the work? Colour the faces that show what you can do. REPRESENTING WHOLE NUMBERS Requirements
Can I do it?
I can represent whole numbers in different ways. I know the difference between even and odd numbers. I can round off numbers to the nearest 5, 10, 100 and 1 000.
LESSON 2: NUMBER SENTENCES You studied number sentences in Grade 4. In Grade 5, you will use number sentences to describe problems and solve number sentences through inspection and by trial and improvement. Briefly revise the Grade 4 work.
What are number sentences?
A number sentence is an arrangement of numbers and symbols:
233 + 19 = 252 455 – 176 = 279 489 × 3 = 1 494 120 ÷ 2 = 60
You will not always work with number sentences. Sometimes a maths problem is expressed in words, and before you can solve it mathematically, you must first formulate a number sentence. Example: Your swimming lessons cost R3 900. Your mom makes 12 equal payments. How much is each payment? Start by reading the problem again and writing down the information: Total amount for lessons: R3 900 How many payments? 12 equal payments © Optimi
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