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2-10 Adding and Subtracting Decimals

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2-10 Adding and Subtracting Decimals

  1. 1. 2-10 Adding and Subtracting Decimals Math Notes Number Sense 2.1
  2. 2. What you’re learning today...
  3. 3. What you’re learning today... Number Sense 2.1
  4. 4. What you’re learning today... Number Sense 2.1 Add, subtract, with decimals and verify the reasonabless of the results.
  5. 5. Find 4.73 + 3.54
  6. 6. Find 4.73 + 3.54 STEP ZEROa: Line up decimals properly
  7. 7. Find 4.73 + 3.54 STEP ZEROa: Line up 4.73 decimals properly + 3.54
  8. 8. Find 4.73 + 3.54 STEP ZEROa: Line up 4.73 decimals properly + 3.54
  9. 9. Find 4.73 + 3.54 STEP ZEROa: Line up 4.73 decimals properly + 3.54
  10. 10. Find 4.73 + 3.54 STEP ZEROa: Line up 4.73 decimals properly STEP ZEROb: Use guidelines to ensure + 3.54 neatness
  11. 11. Find 4.73 + 3.54 STEP ZEROa: Line up 4.73 decimals properly STEP ZEROb: Use guidelines to ensure + 3.54 neatness
  12. 12. Find 4.73 + 3.54 STEP ZEROa: Line up STEP 1: Add the 4.73 decimals properly hundredths. STEP ZEROb: Use guidelines to ensure Regroup. + 3.54 neatness
  13. 13. Find 4.73 + 3.54 STEP ZEROa: Line up STEP 1: Add the 4.73 decimals properly hundredths. STEP ZEROb: Use guidelines to ensure Regroup. + 3.54 neatness 7
  14. 14. Find 4.73 + 3.54 STEP ZEROa: Line up STEP 1: Add the 4.73 decimals properly hundredths. STEP ZEROb: Use guidelines to ensure Regroup. + 3.54 neatness STEP 2: Add the tenths. Regroup if you can. 7
  15. 15. Find 4.73 + 3.54 STEP ZEROa: Line up 1 STEP 1: Add the 4.73 decimals properly hundredths. STEP ZEROb: Use guidelines to ensure Regroup. + 3.54 neatness STEP 2: Add the tenths. Regroup if you can. 27
  16. 16. Find 4.73 + 3.54 STEP ZEROa: Line up 1 STEP 1: Add the 4.73 decimals properly hundredths. STEP ZEROb: Use guidelines to ensure Regroup. + 3.54 neatness STEP 2: Add the tenths. Regroup if you can. 27 STEP 3: Add the one. Regroup if you can.
  17. 17. Find 4.73 + 3.54 STEP ZEROa: Line up 1 STEP 1: Add the 4.73 decimals properly hundredths. STEP ZEROb: Use guidelines to ensure Regroup. + 3.54 neatness STEP 2: Add the tenths. Regroup if you can. 8 27 STEP 3: Add the one. Regroup if you can.
  18. 18. Find 4.73 + 3.54 STEP ZEROa: Line up 1 STEP 1: Add the 4.73 decimals properly hundredths. STEP ZEROb: Use guidelines to ensure Regroup. + 3.54 neatness STEP 2: Add the tenths. Regroup if you can. 8 27 STEP 3: Add the one. Regroup if you can. Don’t forget to place the decimal point in the correct place.
  19. 19. Find 4.73 + 3.54 STEP ZEROa: Line up 1 STEP 1: Add the 4.73 decimals properly hundredths. STEP ZEROb: Use guidelines to ensure Regroup. + 3.54 neatness STEP 2: Add the tenths. Regroup if you can. 8. 2 7 STEP 3: Add the one. Regroup if you can. Don’t forget to place the decimal point in the correct place.
  20. 20. Find 53.261 + 53.214
  21. 21. Find 53.261 + 53.214 STEP ZEROa: Line up decimals properly
  22. 22. Find 53.261 + 53.214 STEP ZEROa: Line up 53.261 decimals properly - 53.214
  23. 23. Find 53.261 + 53.214 STEP ZEROa: Line up 53.261 decimals properly - 53.214
  24. 24. Find 53.261 + 53.214 STEP ZEROa: Line up 53.261 decimals properly - 53.214
  25. 25. Find 53.261 + 53.214 STEP ZEROa: Line up 53.261 decimals properly STEP ZEROb: Use guidelines to ensure - 53.214 neatness
  26. 26. Find 53.261 + 53.214 STEP ZEROa: Line up 53.261 decimals properly STEP ZEROb: Use guidelines to ensure - 53.214 neatness
  27. 27. Find 53.261 + 53.214 STEP ZEROa: Line up STEP 1: 53.261 decimals properly Subtract the STEP ZEROb: Use thousandths. guidelines to ensure Regroup. - 53.214 neatness
  28. 28. Find 53.261 + 53.214 STEP ZEROa: Line up 5 STEP 1: 53.261 1 decimals properly Subtract the STEP ZEROb: Use thousandths. guidelines to ensure Regroup. - 53.214 neatness
  29. 29. Find 53.261 + 53.214 STEP ZEROa: Line up 5 STEP 1: 53.261 1 decimals properly Subtract the STEP ZEROb: Use thousandths. guidelines to ensure Regroup. - 53.214 neatness 7
  30. 30. Find 53.261 + 53.214 STEP ZEROa: Line up 5 STEP 1: 53.261 1 decimals properly Subtract the STEP ZEROb: Use thousandths. guidelines to ensure Regroup. - 53.214 neatness STEP 2: Subtract the hundredths. Regroup if you 7 can.
  31. 31. Find 53.261 + 53.214 STEP ZEROa: Line up 5 STEP 1: 53.261 1 decimals properly Subtract the STEP ZEROb: Use thousandths. guidelines to ensure Regroup. - 53.214 neatness STEP 2: Subtract the hundredths. Regroup if you 47 can.
  32. 32. Find 53.261 + 53.214 STEP ZEROa: Line up 5 STEP 1: 53.261 1 decimals properly Subtract the STEP ZEROb: Use thousandths. guidelines to ensure Regroup. - 53.214 neatness STEP 2: Subtract the hundredths. Regroup if you 47 can. STEP 3: Subtract the tenths. Regroup if you can.
  33. 33. Find 53.261 + 53.214 STEP ZEROa: Line up 5 STEP 1: 53.261 1 decimals properly Subtract the STEP ZEROb: Use thousandths. guidelines to ensure Regroup. - 53.214 neatness STEP 2: Subtract the hundredths. Regroup if you 047 can. STEP 3: Subtract the tenths. Regroup if you can.
  34. 34. Find 53.261 + 53.214 STEP ZEROa: Line up 5 STEP 1: 53.261 1 decimals properly Subtract the STEP ZEROb: Use thousandths. guidelines to ensure Regroup. - 53.214 neatness STEP 2: Subtract the hundredths. Regroup if you 047 can. STEP 4: Subtract STEP 3: Subtract the ones and tens. the tenths. Regroup if you can.
  35. 35. Find 53.261 + 53.214 STEP ZEROa: Line up 5 STEP 1: 53.261 1 decimals properly Subtract the STEP ZEROb: Use thousandths. guidelines to ensure Regroup. - 53.214 neatness STEP 2: Subtract the hundredths. Regroup if you 0 047 can. STEP 4: Subtract STEP 3: Subtract the ones and tens. the tenths. Regroup if you can.
  36. 36. Find 53.261 + 53.214 STEP ZEROa: Line up 5 STEP 1: 53.261 1 decimals properly Subtract the STEP ZEROb: Use thousandths. guidelines to ensure Regroup. - 53.214 neatness STEP 2: Subtract the hundredths. Regroup if you 0 0 047 can. STEP 4: Subtract STEP 3: Subtract the ones and tens. the tenths. Regroup if you can.
  37. 37. Find 53.261 + 53.214 STEP ZEROa: Line up 5 STEP 1: 53.261 1 decimals properly Subtract the STEP ZEROb: Use thousandths. guidelines to ensure Regroup. - 53.214 neatness STEP 2: Subtract the hundredths. Regroup if you 0 0 047 can. STEP 4: Subtract STEP 3: Subtract the ones and tens. the tenths. Regroup if you can. Don’t forget to place the decimal point in the correct place.
  38. 38. Find 53.261 + 53.214 STEP ZEROa: Line up 5 STEP 1: 53.261 1 decimals properly Subtract the STEP ZEROb: Use thousandths. guidelines to ensure Regroup. - 53.214 neatness STEP 2: Subtract the hundredths. Regroup if you 0 0.047 can. STEP 4: Subtract STEP 3: Subtract the ones and tens. the tenths. Regroup if you can. Don’t forget to place the decimal point in the correct place.

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