This week
Lessons 96, 97, 98, 99 & 100
STILLWATER CROSSING · THE COURSE NOTES · BRIDGE MATH 5/6
Week 21 · Fractions to Decimals
Papers
Test 10 to do at home
Method
No calculators, ever · show every step
Instructional notes
More Changing Fractions to Decimals
To change a fraction to a decimal: • Divide the numerator by the denominator • Annex zeros as needed . *Some fractions will have terminating decimals, but others will be repeating decimals.
Example
Change these fractions to decimals.
Practice
Change these fractions to decimals.
1 1 = 0.2 = 0.16 5 6
2 6 = 0.6 = 0.54 3 11
Instructional notes
Metric Measurement Equations
• Rewrite the equation using only the desired measure • Draw a box around the measures that are different • Convert the boxed measurements • Solve
Practice
Solve each metric measurement equation.
3.67 daL - 215 dL = 1.52 daL 0.5 kg + 82 g = 582 g
220 daL - 180 dL = 218.2 daL 167.8 cg + 12.6 hg = 126,167.8 cg
Instructional notes
Rounding Decimals
To round a decimal:
• Underline the digit in the place you want to round to • Circle the digit to the right___ If the digit is 5 or more, you will round the underlined digit up If the digit is less than 5, the underlined digit stays the _same_
Example
Round each number to the place indicated. Number to be Ones Tenths Hundredths rounded
Practice
Round each number to the place indicated. Number to be Ones Tenths Hundredths rounded
60
✍ In your own words
Why is estimation useful as a tool to check your math work? Give an example of when estimation catches a mistake. Suggested Answer: "Estimation gives you an approximate answer quickly. If your exact answer is very different from your estimate, you probably made a mistake. For example, if you multiply 1.97 × 5 and get 98.5 instead of 9.85, estimating 2 × 5 = 10 would tell you 98.5 is way too big."
Homework this week
| Work-text | Lesson 96 | Lesson 97 | Lesson 98 | Lesson 99 |
|---|---|---|---|---|
| Speed drill | 96 | 97 | 98 | 100 |
Terms on the record
| Term | Meaning |
|---|---|
| more | If the digit is 5 or more, you will round the underlined digit up |
| less | If the digit is less than 5, the underlined digit stays the _same_ |
| same | If the digit is less than 5, the underlined digit stays the _same_ |
| rounding decimals | To round a decimal: |
STILLWATER CROSSING // BRIDGE MATH // PENUMBRA · steady on