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2-10 Adding and Subtracting Decimals
The document provides step-by-step instructions for adding and subtracting decimals. It explains how to line up the decimals properly, then add or subtract place values from right to left, regrouping when needed. Examples shown include adding 4.73 + 3.54 = 8.27 and subtracting 53.261 - 53.214 = 0.047. The steps emphasize placing decimals in the correct position in the final answer.
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2-10 Adding and Subtracting Decimals
- 1. 2-10 Adding and SubtractingDecimals Math Notes Number Sense 2.1
- 2. What you’re learningtoday...
- 3. What you’re learningtoday... Number Sense 2.1
- 4. What you’re learningtoday... Number Sense 2.1 Add, subtract, with decimals and verify the reasonabless of the results.
- 5. Find 4.73 +3.54
- 6. Find 4.73 +3.54 STEP ZEROa: Line up decimals properly
- 7. Find 4.73 +3.54 STEP ZEROa: Line up 4.73 decimals properly + 3.54
- 8. Find 4.73 +3.54 STEP ZEROa: Line up 4.73 decimals properly + 3.54
- 9. Find 4.73 +3.54 STEP ZEROa: Line up 4.73 decimals properly + 3.54
- 10. Find 4.73 +3.54 STEP ZEROa: Line up 4.73 decimals properly STEP ZEROb: Use guidelines to ensure + 3.54 neatness
- 11. Find 4.73 +3.54 STEP ZEROa: Line up 4.73 decimals properly STEP ZEROb: Use guidelines to ensure + 3.54 neatness
- 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. 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. 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. 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. 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. 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. 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. 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. Find 53.261 +53.214
- 21. Find 53.261 +53.214 STEP ZEROa: Line up decimals properly
- 22. Find 53.261 +53.214 STEP ZEROa: Line up 53.261 decimals properly - 53.214
- 23. Find 53.261 +53.214 STEP ZEROa: Line up 53.261 decimals properly - 53.214
- 24. Find 53.261 +53.214 STEP ZEROa: Line up 53.261 decimals properly - 53.214
- 25. Find 53.261 +53.214 STEP ZEROa: Line up 53.261 decimals properly STEP ZEROb: Use guidelines to ensure - 53.214 neatness
- 26. Find 53.261 +53.214 STEP ZEROa: Line up 53.261 decimals properly STEP ZEROb: Use guidelines to ensure - 53.214 neatness
- 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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.