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Solve Mathematics problems for 3rd grade on pages 12, 13, 14 in Textbook Volume 2
Solving exercises on pages 12, 13, 14 in Mathematics 3 Volume 2 Textbook, connecting knowledge with real life
Discovering Roman Numerals
Engaging Activity
Solve Exercise 1 on Page 12 in Mathematics 3 Textbook for Grade 3
Problem: Determine the hour shown on each clock.
Solution Guide:
The short hand points to the hour, the long hand points to the minute.
Observe the picture, determine the time on each clock.
Answer:
The clock in picture A shows 1 hour.
The clock in picture B shows 5 hours.
The clock in picture C shows 9 hours.
The clock in picture D shows 10 hours.
2. Solve Exercise 2 Page 13 Mathematics Textbook Grade 3
Problem: Choose the appropriate pair of numbers and Roman numerals.
Solution Guide: Use the Roman numeral representation to match corresponding number pairs.
Answer:
We have:
Number 13: XIII
Number 15: XV
Number 11: XI
Number 17: XVII
Connect them as follows:
3. Solve Exercise 3 Page 13 Mathematics Textbook Grade 3
a) Read the following Roman numerals:
VI; V; VIII; II; XI; IX.
b) Write the numbers from 1 to 15 in Roman numerals.
Solution Guide:
a) The commonly used Roman numeral readings are:
I: one V: five X: ten
b) Use the table of Roman numerals from 1 to 20 to write them down.
Answer:
a) The given Roman numerals are read as follows:
VI: six V: five VIII: eight
II: two XI: eleven IX: nine
b) The Roman numerals from 1 to 15 are:
I, II, III, IV, V, VI, VII, VIII, IX, X, XI, XII, XIII, XIV, XV.
Practice
1. Solve Exercise 1 Page 13 Mathematics Textbook Grade 3
Problem: Use sticks to form Roman numerals as shown:
a) Using 5 sticks, form the numbers 8 and 13 in Roman numerals.
b) To form three number 9s in Roman numerals, how many sticks are needed?
Solution Guide: Apply the Roman numeral writing method to arrange sticks into the required numbers.
Answer:
a) They can be arranged as follows:
b) Arrange the sticks to form the number 9 in Roman numerals as follows:
Observing, to arrange the number 9, we need 3 sticks.
So, to arrange three number 9s in Roman numerals, we need the number of sticks to be: 3 x 3 = 9 (sticks).
2. Solve Exercise 2 Page 13 Mathematics Textbook Grade 3
a) Find the appropriate Roman numeral.
b) Arrange the numbers XIII; XVII; XII; XVIII in ascending order.
Solution Guide:
a) Count consecutive numbers, starting from the number in the first box, then fill in the missing Roman numerals.
b) Determine the values of the Roman numerals and then compare, arrange the given numbers in ascending order.
Answer:
a) Fill in the numbers as follows:
b) The given numbers written in ascending order are as follows: XII; XIII; XVII; XVIII.
- See more: Solve exercises on page 16 Mathematics Textbook Grade 3 Volume 2, Connect Knowledge to Life series
3. Solve Exercise 3 Page 13 Mathematics Textbook Grade 3
Problem: Choose an electronic clock suitable for a sundial.
Solution Guide: Determine which number the hour hand is pointing to and then read the corresponding time.
Answer:
On clock B: The hour hand points to the number VI, indicating 6 o'clock.
On clock C: The hour hand points to the number VIII, indicating 8 o'clock.
4. Solve Exercise 4 Page 13 Mathematics Textbook Grade 3
Problem: Find the path for the gazelle to reach the drinking pond in the order of Roman numerals from I to XX.
Solution Guide: Determine the Roman numerals in order from I to XX to indicate the path for the gazelle.
Answer:
Solving exercises on pages 12, 13, 14 Mathematics Textbook Grade 3 Volume 2, Connect Knowledge to Life series has been explained in great detail. Pay attention to reference and apply the learned knowledge to visualize the process before attempting the exercises for better retention. You can easily solve similar problems by following these steps.
