From 40 to 70, digit sums range from 4 (40) to 13 (67). Odd numbers have higher sums due to increasing last digits, and numbers ending in 9 are the largest.
class 6 Mathematics Textbook Chapter 3 question answer
class 6 Mathematics Chapter 3 Number Play solutions
Between 40 and 70, digit sums incrementally grow, beginning at 4 for 40 and peaking at 13 for 67. Odd numbers tend to have higher sums because the last digit increases sequentially (e.g., 41 = 5, 43 = 7). Numbers ending in 9 (like 49, 59, 69) exhibit the largest sums in their respective decades. The pattern reveals consistent growth and symmetry based on simple addition rules.
For more NCERT Solutions for Class 6 Math Chapter 3 Number Play Extra Questions and Answer:
https://www.tiwariacademy.com/ncert-solutions-class-6-maths-ganita-prakash-chapter-3/