Question

1. solve the problem and type your answer below *

72
+ 13
your answer

1. solve the problem and type your answer below. *

45

• 18

your answer

Explanation:

Step1: Add the ones - digits for the first problem

$2 + 3=5$

Step2: Add the tens - digits for the first problem

$70+10 = 80$

Step3: Combine the results for the first problem

$80 + 5=85$

Step4: Subtract the ones - digits for the second problem

Since $5<8$, we borrow 1 from the tens place. So $15 - 8 = 7$

Step5: Subtract the tens - digits for the second problem

After borrowing, the 4 in the tens place becomes 3. So $30-10 = 20$

Step6: Combine the results for the second problem

$20+7 = 27$

Answer:

85
27