Calculate the following 3. a. 37÷3=

$$7 \times 3 = 21$$

Write down 1 and carry over 2.

$$3 \times 3 = 9$$ $$9 + 2 = 11$$

Combine the results.

$$37 \times 3 = \boxed{111}$$

Divide 48 by 5.

$$48 \div 5 = 9 \text{ with a remainder of } 3$$

So, $98 \div 5 = \boxed{19 \text{ remainder } 3}$

Divide 3 by 4.

$$3 \div 4 = 0 \text{ with a remainder of } 3$$

So, $83 \div 4 = \boxed{20 \text{ remainder } 3}$