Decimals the fast way: 6th grade math
Fluent decimal operations, standard algorithms. A free 6th grade lesson plan, a question set with answers and a printable sheet with its key. Copy it and make it yours.
Lesson plan
Goal
- Students can do this: fluent decimal operations, standard algorithms.
Teach (10 min)
- Line up the decimal points so each place sits above the same place.
- Write zeros to fill empty places: 4.5 + 2.37 is 4.50 + 2.37 = 6.87.
- Work one example on the board while students say each step aloud, then do one together.
Practise (15 min)
- Students work the printable sheet in pairs, then alone.
- Or practise it as a game with no sign-up: https://peabody.kids/math/base10.addSub?lesson=6-base10-addsub-1&at=6
Exit ticket (5 min)
- Use the first three questions on the printable sheet as a slip.
Printable sheet
Name: ____________________ Date: ____________
Decimals the fast way (6th grade)
- Find 20.7 + 0.9. Line up the decimal points.
- Find 16.8 + 16.9. Line up the decimal points.
- Find 14.92 − 8.9. Line up the decimal points.
- Find 10.88 − 2.9. Line up the decimal points.
- Find 16.53 − 14.8. Line up the decimal points.
- Find 56.11 + 35.2. Line up the decimal points.
- Find 42.43 + 43.8. Line up the decimal points.
- Find 34.54 − 17.1. Line up the decimal points.
- Find 58.18 + 11.5. Line up the decimal points.
- Find 40.9 − 40.66. Line up the decimal points.
- Find 38.77 − 21.3. Line up the decimal points.
- Find 45.13 − 40.26. Line up the decimal points.
Key
- 21.6
- 33.7
- 6.02
- 7.98
- 1.73
- 91.31
- 86.23
- 17.44
- 69.68
- 0.24
- 17.47
- 4.87
Written by Peabody from its own skill pages. Free, no ads, no sign-in. Children can practise this on Peabody. More from teachers: teacher-shared resources.