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Guidance for Solving Exercise 3 on Page 98 of Math 4 Workbook
Problem Statement:
Determine True or False?
a) The number 13,465 is not divisible by 3;
b) The number 70,009 is divisible by 9;
c) The number 78,435 is not divisible by 9;
d) A number ending in 0 is divisible by both 2 and 5.
Solution Method:
- Divisibility rule for 3: If the sum of the digits is divisible by 3, then the number is divisible by 3.
- Divisibility rule for 9: If the sum of the digits is divisible by 9, then the number is divisible by 9.
- A number divisible by both 5 and 2 must end with 0.
a) The number 13,465 has a sum of digits equal to 1 + 3 + 4 + 6 + 5 = 19.
b) False
d) True.
The solution for Grade 4 math problem on page 98 practice consists of 4 exercises. After solving Exercise 3 on page 98 of Math 4 Workbook, you can continue to check hints and methods for solving Exercise 1 on Page 98 Math 4 Workbook, Exercise 2 on Page 98 Math 4 Workbook, and Exercise 4 on Page 98 Math 4 Workbook to improve your Grade 4 math skills.
