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Adding Decimals

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  • 1. Adding Decimal Numbers Using The Column Method For more maths help & free games related to this, visit: www.makemymathsbetter.com
  • 2. For example: 3.77 + 4.28
  • 3. For example: 3.77 + 4.28 Firstly, line the numbers up correctly U 3 + 4 t 7 2 h 7 8
  • 4. For example: 3.77 + 4.28 Firstly, line the numbers up correctly and add a decimal point in the answer bar: U 3 + 4 t 7 2 h 7 8
  • 5. U 3 + 4 t 7 2 h 7 8 Then add up the hundredths:
  • 6. U 3 + 4 t 7 2 h 7 8 Then add up the hundredths: 7 + 8 = 15
  • 7. U 3 + 4 t 7 2 h 7 8 5 Then add up the hundredths: 7 + 8 = 15 The 5 is written in the hundredths column
  • 8. U 3 + 4 t 7 2 h 7 8 5 1 Then add up the hundredths: 7 + 8 = 15 The 5 is written in the hundredths column and the 1 is carried into the tenths column and written below the answer bar.
  • 9. U 3 + 4 t 7 2 Now add up the tenths: h 7 8 5 1
  • 10. U 3 + 4 t 7 2 Now add up the tenths: 7 + 2 + 1 = 10 tenths h 7 8 5 1
  • 11. U 3 + 4 Now add up the tenths: 7 + 2 + 1 = 10 tenths The 0 is written in the tenths column t 7 2 h 7 8 0 5 1
  • 12. U 3 + 4 Now add up the tenths: 7 + 2 + 1 = 10 tenths The 0 is written in the tenths column and the 1 is carried into the UNITS column and written below the answer bar. h 7 8 0 1 t 7 2 5 1
  • 13. U 3 + 4 1 h 7 8 0 Finally, add up the units: t 7 2 5 1
  • 14. U 3 + 4 1 h 7 8 0 Finally, add up the units: 3+4+1=8 t 7 2 5 1
  • 15. U 3 + 4 Finally, add up the units: 3+4+1=8 The 8 is written in the Units column t 7 2 h 7 8 8 0 5 1 1
  • 16. U 3 + 4 t 7 2 h 7 8 8 0 5 1 1
  • 17. That’s it for now...... For more help with your maths, try my book: mastering multiplication tables on amazon.com