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Guidance on solving exercises on page 43 of Math 4, including solution methods
1. Solve exercise 1 on page 43 of Math 4 textbook
Problem:
State the results of the following calculations:
a) 468 + 379 = 847 b) 6 509 + 2 876 = 9 385 c) 4 268 + 76 = 4 344
379 + 468 = ... 2 876 + 6 509= ... 76 + 4 268 = ...
Solution method:
* Note: Commutative property of addition: Rearranging the addends in a sum does not change the sum.
Answer:
Applying the commutative property of addition, without needing to write down the operations, children can state the results as follows:
a) 468 + 379 = 847 b) 6 509 + 2 876 = 9 385 c) 4 268 + 76 = 4 344
379 + 468 = 847 2 876 + 6 509 = 9 385 76 + 4 268 = 4 344
2. Solve exercise 2 on page 43 of Math 4 textbook
Problem:
Write the appropriate numbers or letters in the blanks:
a) 48 + 12 = 12 + ... b) m + n = n + ...
65 + 297 = ... + 65 84 + 0 = ...+ 84
.... + 89 = 89 + 177 a + 0 = ...+ a = ...
Solution method:
Children apply the commutative property of addition: Rearranging the addends in a sum does not change the sum.
Answer:
Applying the commutative property of addition, we have:
a) 48 + 12 = 12 + 48 b) m + n = n + m
65 + 297 = 297 + 65 84 + 0 = 0 + 84
177 + 89 = 89 + 177 a + 0 = 0 + a = a
3. Solve exercise 3 on page 43 of Math 4 textbook
Solution method:
Concise guide to solving exercises on page 43 Math 4
In the 4th grade Math program, the section Solving Math Problems on page 68 is one of the crucial topics for students to focus on and enhance their Math 4 solving skills.
Detailed content of the Solving Math Problems section on page 57 has been fully instructed for students to refer to and prepare for better practicing Math 4.
In the previous exercises, students have been guided on solving 4th-grade math problems on page 42 of the textbook - Expressions containing two letters. In the Math 4 problem-solving guide along with the guide to solve exercises on the Commutative Property of Addition, comprehensive theoretical knowledge is provided to clearly demonstrate the commutative property of addition, helping students grasp and understand the content for easier problem-solving. The commutative property of addition is illustrated when rearranging the addends in a sum does not alter the sum. Students can fully apply various problem-solving methods along with easy-to-understand instructions to expedite and simplify the process of doing exercises.
In the following exercises, I invite you to refer to how to solve 4th-grade math problems on pages 43 and 44 of the textbook - Expressions containing three letters. Let's follow along to make your learning process faster and more effective.
Above is the Solving exercises on page 43 Math 4 section in the Math 4 problem-solving section. Students can review the Solving exercises on page 42 Math 4 that have been solved previously or preview the Solving exercises on pages 43 and 44 Math 4 to excel in the 4th-grade Math subject.
