Question

3 digit by 1 digit division
solve each problem and show your work.
use the facts chart if you need help!
3 facts
3×1 = 3
3×2 = 6
3×3 = 9
3×4 = 12
3×5 = 15
3×6 = 18
3×7 = 21
3×8 = 24
3×9 = 27
\\(\

$$\begin{array}{r}\\ 3\\enclose{longdiv}{423}\\ \\end{array}$$

\\) \\(\

$$\begin{array}{r}\\ 3\\enclose{longdiv}{816}\\ \\end{array}$$

\\)\\(\

$$\begin{array}{r}\\ 3\\enclose{longdiv}{801}\\ \\end{array}$$

\\) \\(\

$$\begin{array}{r}\\ 3\\enclose{longdiv}{438}\\ \\end{array}$$

\\)

Explanation:

Step1: Divide 423 by 3, digit by digit

1. Divide 4 by 3: $3 \times 1 = 3$, remainder $4-3=1$. Bring down 2 to get 12.
2. Divide 12 by 3: $3 \times 4 = 12$, remainder 0. Bring down 3 to get 3.
3. Divide 3 by 3: $3 \times 1 = 3$, remainder 0.

$$\frac{423}{3} = 141$$

Step2: Divide 816 by 3, digit by digit

1. Divide 8 by 3: $3 \times 2 = 6$, remainder $8-6=2$. Bring down 1 to get 21.
2. Divide 21 by 3: $3 \times 7 = 21$, remainder 0. Bring down 6 to get 6.
3. Divide 6 by 3: $3 \times 2 = 6$, remainder 0.

$$\frac{816}{3} = 272$$

Step3: Divide 801 by 3, digit by digit

1. Divide 8 by 3: $3 \times 2 = 6$, remainder $8-6=2$. Bring down 0 to get 20.
2. Divide 20 by 3: $3 \times 6 = 18$, remainder $20-18=2$. Bring down 1 to get 21.
3. Divide 21 by 3: $3 \times 7 = 21$, remainder 0.

$$\frac{801}{3} = 267$$

Step4: Divide 438 by 3, digit by digit

1. Divide 4 by 3: $3 \times 1 = 3$, remainder $4-3=1$. Bring down 3 to get 13.
2. Divide 13 by 3: $3 \times 4 = 12$, remainder $13-12=1$. Bring down 8 to get 18.
3. Divide 18 by 3: $3 \times 6 = 18$, remainder 0.

$$\frac{438}{3} = 146$$

Answer:

1. $423 \div 3 = 141$
2. $816 \div 3 = 272$
3. $801 \div 3 = 267$
4. $438 \div 3 = 146$