Course: Mathematics basic 7

Section outline

Select section Sub-strand 1.1: Number & Numeration Systems

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Sub-strand 1.1: Number & Numeration Systems

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  Chapter 1: modelling number quantities
  
  Select activity Drag exercise
  
  Drag exercise Interactive Content
  
  Select activity how many busses are needed?
  
  how many busses are needed? Interactive Content
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  Chapter 2: comparing & ordering whole numbers
  
  Select activity Explanation of skip counting
  
  Skip counting means, adding or reducing multiple times by the same number. The image shows a number of examples.
  
  It is possible to calculate how big the skip is. For example if you have a row of numbers: 3 6 9 12 you can take 2 numbers that are next to each: 6 and 9 then you take the biggest of the two and substract it with the smaller one so 9-6=3 and now you know that the skip is 3
  
  2 4 6 8 10 6-4=2
  
  7 14 21 28 28-21=7
  
  300 400 500 600 500-400=100
  
  Select activity 2.1.1 Skip counting
  
  2.1.1 Skip counting Interactive Content
  
  Select activity 2.1.2 Skip counting
  
  2.1.2 Skip counting Interactive Content
  
  Select activity Explanation of place value of numbers
  
  Select activity 2.2.1 Place value of numbers
  
  2.2.1 Place value of numbers Interactive Content
  
  Select activity 2.2.2 Place value of numbers
  
  2.2.2 Place value of numbers Interactive Content
  
  Select activity Explanation of signs
  
  Select activity 2.3.1 Signs
  
  2.3.1 Signs Interactive Content
  
  Select activity 2.3.2 Use the right sign
  
  2.3.2 Use the right sign Interactive Content
  
  Select activity Explanation of reading and writing numbers
  
  Select activity 2.4 Reading and writing numbers
  
  2.4 Reading and writing numbers Interactive Content
  
  Select activity 2.4 Reading and writing numbers
  
  2.4 Reading and writing numbers Interactive Content
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  Chapter 3: rounding off whole numbers
  
  Select activity explination rounding off with hole numbers
  
  When you are rounding off with hole numbers it doesn't matter if it is with tens or hunderds the principle stays the same.
  
  When you are rounding off with tens only the last 2 numbers are effected so with 21974 it's only about '74'.
  
  With tens if the last number is a 5 or above it gets rounded up so 15 becomes 20. If the number is a 4 or lower it gets rounden down so 74 becomes 70.
  
  Rounding up with hunderds is almost the same but not its about the last 3 numers in 21974. The rounding off rules stay the same but then with a zero behind it 150 becomes 200. This doesnt mean that 974 becomes 740 the rules stay the same but the numbers may change so 974 becomes 1000.
  
  Select activity Rounding off with tens
  
  Rounding off with tens Interactive Content
  
  Select activity Rounding off with hunderds
  
  Rounding off with hunderds Interactive Content
  
  Select activity Rounding off with thousands
  
  Rounding off with thousands Interactive Content
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  Chapter 4: decimals
  
  Select activity Explanation of rounding to hole numbers with decimals
  
  Explanation of rounding to hole numbers with decimals Interactive Content
  
  Select activity Round off with whole numbers, 2 choice quiz
  
  Round off with whole numbers, 2 choice quiz Interactive Content
  
  Select activity drag the picture to the 1 or 2 depending on the side it will roll to
  
  drag the picture to the 1 or 2 depending on the side it will roll to Interactive Content
  
  Select activity Decimal quiz
  
  Decimal quiz Interactive Content
  
  Select activity multiplying with decimals
  
  multiplying with decimals Interactive Content
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  Test Sub-strand 1.1
  
  Select activity Test sub-strand 1.1
  
  Test sub-strand 1.1 Interactive Content
- Select activity Announcements
  
  Announcements Forum
Select section Sub-strand 1.2: Number operations

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Sub-strand 1.2: Number operations

Section outline

Sub-strand 1.1: Number & Numeration Systems

Chapter 1: modelling number quantities

Chapter 2: comparing & ordering whole numbers

Chapter 3: rounding off whole numbers

Chapter 4: decimals

Test Sub-strand 1.1

Sub-strand 1.2: Number operations