Lesson 12: Revision - 1

For Grade 5 Students (Ages 10-11) - Let's review what we've learned so far!

What we will revise today:

In this lesson, we will revise concepts from previous lessons, including:

  • Numbers (Place Value, Reading and Writing Numbers)
  • Addition and Subtraction
  • Number Patterns
  • Fractions (Introduction, Numerator, Denominator)
  • Multiplication (Single-digit, by 10, 100, 1000)
  • Division (Single-digit, by 10, 100, 1000)
  • Time (Reading time, AM/PM, Conversions)
  • Length and Distance (Units, Conversions, Addition/Subtraction)
  • Money (Currency, Conversions, Addition/Subtraction)

Revision Exercises

Let's test your understanding of the topics we've covered. Try to answer these questions without looking back at previous lessons!

Section 1: Numbers (Lessons 1 & 2)

1. Write the place value of the digit '7' in $78,123$.

2. Write $54,009$ in words.

Section 2: Addition and Subtraction (Lessons 3 & 5)

3. $4567 + 3210 = \underline{\hspace{2cm}}$

4. $8000 - 1234 = \underline{\hspace{2cm}}$

Section 3: Number Patterns (Lesson 4)

5. Find the next number in the pattern: $3, 7, 11, 15, \dots$

Section 4: Fractions (Lesson 6)

6. Write the fraction for three-fifths.

7. In the fraction $\frac{5}{8}$, what is the denominator?

Section 5: Multiplication and Division (Lessons 7 & 9)

8. $25 \times 7 = \underline{\hspace{2cm}}$

9. $450 \div 10 = \underline{\hspace{2cm}}$

Section 6: Time (Lesson 8)

10. Convert $4$ hours to minutes.

11. What does $9:00$ PM mean?

Section 7: Length and Distance (Lesson 10)

12. Convert $3$ km to meters.

13. Add $1$ m $50$ cm and $2$ m $30$ cm. (in m cm)

Section 8: Money (Lesson 11)

14. Convert Rs. $10$ to cents.

15. You have Rs. $200$. You spend Rs. $80.50$. How much is left?

Answers to Revision Exercises

Let's check your answers!

  1. Section 1: Numbers

    • 1. Ten Thousands
    • 2. Fifty-four thousand nine

  2. Section 2: Addition and Subtraction

    • 3. $7777$
    • 4. $6766$

  3. Section 3: Number Patterns

    • 5. $19$ (Rule: Add 4)

  4. Section 4: Fractions

    • 6. $\frac{3}{5}$
    • 7. $8$

  5. Section 5: Multiplication and Division

    • 8. $175$
    • 9. $45$

  6. Section 6: Time

    • 10. $240$ minutes
    • 11. 9 in the evening

  7. Section 7: Length and Distance

    • 12. $3000$ m
    • 13. $3$ m $80$ cm

  8. Section 8: Money

    • 14. $1000$ cts.
    • 15. Rs. $119.50$

You've completed Lesson 12: Revision - 1!

Excellent effort, Math Lanka students! You've worked hard to revise the topics from the first part of your Grade 5 math journey. Keep practicing regularly to keep your skills sharp!

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