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\ 26-Feb-2024 Bharat Arora Proof-6 Reader’s Sign _______________________ Date __________

Practice Time 2e

1. Add the following.

(a) t O (b) t O (c) t O (d) t O

2 8 6 7 1 9
+ 5 + 4 8 + 3 5 + 7

(e) t O (f) t O (g) t O (h) t O

2 2 6 4 5 5 6 8
+ 3 9 + 1 9 + 3 6 + 2 8

2. Write in columns and add.

(a) 39 + 8 (b) 54 + 7 (c) 46 + 25 (d) 63 + 19
t O t O t O t O

+ + + +

ADDING mOre ThAN TwO NumberS wITh reGrOuPING

Rani’s father refers an online shopping store app to Rani and
her sister. Rani shopped online and gained 4 points. Her sister
shopped at the same online store and gained 5 points. Their
father gained 6 referral points without shopping.

rani: How many points we have earned altogether?
Father: 4 + 5 + 6 = 15 points

rani: How do you add so quickly? Check if the
Father: We can add more than two sum of any two t O

numbers in any order. Group the numbers is 10. 4
numbers for tens. We know that 5
4 and 6 make 10, so we can add them + 6
together first. Then we add 5 to 10. 1 5

Thus, 4 + 5 + 6 = 4 + 6 + 5 = 10 + 5 = 15

44 Mathematics-2