Question

please answer me because submission date is 21 june 4:00 pm class 4th ​

Answer 1

Answer:

1 . 75 2. 39

Step-by-step explanation:

1. (30 +50) + (3+2)

=70+5

=75

2. (20+10)+(8+1)

=30+9

=39

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Answer 2

Answer:

33+52 = 85 ,

or you can split like this => 33 = 30+3

52 = 50+2

therefore , 33 + 52 = 30 +3 + 50 + 2 = 85

similarly , 21+18=39

or , 20+1+10+8= 39

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