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Step-by-step solution for Exercise 3 on page 45 Mathematics Grade 4
Problem statement:
Fill in the blanks with appropriate numbers or letters:
a) a + 0 = ... + a = ...
b) 5 + a = ... + 5
c) (a + 28) + 2 = a + (28 +...) = a + ..
Solving Approach:
Apply two fundamental properties of addition:
- Commutative property: When you interchange the terms in a sum, the sum remains unchanged.
- Associative property: When adding a sum of two numbers to a third number, you can add the first number to the sum of the second and third numbers.
Solution:
The students utilize the associative property of addition to fill in the blanks as follows:
a) a + 0 = 0+ a = a
b) 5 + a = a + 5
c) (a + 28) + 2 = a + (28 + 2) = a + 30.
Section solving exercises page 45 Mathematics Grade 4 comprises 3 exercises. After solving exercise 3 on page 45 of Mathematics Grade 4 textbook, students are encouraged to explore hints and methods for Solving Exercise 1 Page 45 Mathematics Grade 4 and Solving Exercise 2 Page 45 Mathematics Grade 4 to improve their understanding of the subject.
