PEAZIT Aha card
Go straight to resources ↓Decimals: align equal place values
Add tenths to tenths and hundredths to hundredths. Align decimal points, not the final digits.
| Expression | Meaning |
|---|---|
| 3.4 + 0.27 = 3.40 + 0.27 | Append a zero to align place values. |
| 340/100 + 27/100 = 367/100 | Count equal-sized hundredths. |
| 3.67 | Write 367 hundredths as a decimal. |
One worked example
- 3.4 + 0.27 = 3.40 + 0.27Append a zero to align place values.
- 340/100 + 27/100 = 367/100Count equal-sized hundredths.
- 3.67Write 367 hundredths as a decimal.
Watch out: A trailing decimal zero does not change the value; an internal zero can: 3.04 ≠ 3.4.
Goal, prerequisites and card origin
What you will learn: Add and subtract decimals with different numbers of decimal places.
What you need first: Units, tenths and hundredths.
An original PEAZIT working card. Independent expert review and effectiveness testing have not yet taken place. · v1
Show connections
Add tenths to tenths and hundredths to hundredths. Align decimal points, not the final digits.