Buzz
Guidelines for solving exercise 1 on pages 138, 139 of Math 4 textbook
Solution method:
- To add or subtract two fractions with different denominators, find a common denominator and then add or subtract the numerators while keeping the denominator unchanged
- To multiply two fractions, multiply the numerators together and the denominators together
- To divide two fractions, multiply the first fraction by the reciprocal of the second fraction.
Answer:
The correct operation is c). To multiply two fractions, multiply the numerators with each other, and the denominators with each other.
Explanation: Operations a) and b) are incorrect. To add (or subtract) two fractions with different denominators, we need to find a common denominator, then add (or subtract) the fractions with the same denominator.
Operation d) is incorrect. To divide one fraction by another, multiply the first fraction by the reciprocal of the second fraction.
Here is the solution guide for exercise 1 on page 138, 139 of Math 4 textbook, focused practice section. Additionally, there are 4 other exercises in this section: Solution for exercise 2 on page 138, 139 of Math 4 textbook, Solution for exercise 3 on page 138, 139 of Math 4 textbook, Solution for exercise 4 on page 138, 139 of Math 4 textbook, and Solution for exercise 5 on page 138, 139 of Math 4 textbook. Let's check out the solutions for Math 4 exercise on page 138, 139 to excel in 4th-grade Math!
