maths

• 234 500 320

  Two hundred and thirty-four million, five hundred thousand, three hundred and twenty
• Rounding to nearest 5

  • 612 ≈ 610
  • 87 ≈ 85
  • 454 ≈ 455
  • 1 328 ≈ 1330
• Rounding to nearest 10

  • 12 ≈ 10
  • 87 ≈ 90
  • 454 ≈ 450
  • 1 325 ≈ 1330
• 1 and 2 do not produce the same result
• 7 and 8 produce the same result
• 1 and 4 do not produce the same result
• 1 and 7 produce the same result
• 1 and 6 produce the same result
• 4 and 5 do not produce the same result
• 2500 – 1000 – 500


  1000
• 500 + 1500 + 2000


  4000
• 2000 + 500 + 1500


  4000
• Factorising 195


  3 × 5 × 13
• Factorising 385

  5 × 7 × 11
• 7 is not a factor of both 195 and 385
• 5 is a factor of both 195 and 385
• Prime factors of 60

  2, 3, and 5
• Dividing R80 in the ratio 3 : 5


  1. R30

  2. R50
• Dividing 36 000 litres in the ratio 1 : 2 : 3


  1. 6 000 litres

  2. 12 000 litres

  3. 18 000 litres
• Ratio R33 : 30c

  110 : 1
• Ratio 3 dozen : 36

  1 : 1
• Ratio 440 g : 1 kg

  11 : 25
• Ratio 4.5 hours : 1.5 hour

  3 : 1
• 14 crayons cost R105

  1 crayon costs R7.50
• 20 litres of apple juice cost R160

  8.5 litres of apple juice cost R68
• Ratio of boys to girls in the class

  2 : 3
• Ratio of Kaylin's two test marks

  16 : 15