Question

divide:
(1) $66\div7=$
(2) $68\div8=$
(3) $69\div9=$
(4) $70\div7=$
(5) $71\div8=$
(6) $75\div9=$
(7) $76\div8=$
(8) $78\div9=$
(9) $79\div8=$
(10) $80\div10=$

Explanation:

Step1: Calculate quotient and remainder

$66\div7 = 9$ remainder $3$, or $\frac{66}{7}=9\frac{3}{7}$

Step2: Calculate quotient and remainder

$68\div8 = 8$ remainder $4$, or $\frac{68}{8}=8\frac{4}{8}=8\frac{1}{2}$

Step3: Calculate quotient and remainder

$69\div9 = 7$ remainder $6$, or $\frac{69}{9}=7\frac{6}{9}=7\frac{2}{3}$

Step4: Calculate exact quotient

$70\div7 = 10$

Step5: Calculate quotient and remainder

$71\div8 = 8$ remainder $7$, or $\frac{71}{8}=8\frac{7}{8}$

Step6: Calculate quotient and remainder

$75\div9 = 8$ remainder $3$, or $\frac{75}{9}=8\frac{3}{9}=8\frac{1}{3}$

Step7: Calculate quotient and remainder

$76\div8 = 9$ remainder $4$, or $\frac{76}{8}=9\frac{4}{8}=9\frac{1}{2}$

Step8: Calculate quotient and remainder

$78\div9 = 8$ remainder $6$, or $\frac{78}{9}=8\frac{6}{9}=8\frac{2}{3}$

Step9: Calculate quotient and remainder

$79\div8 = 9$ remainder $7$, or $\frac{79}{8}=9\frac{7}{8}$

Step10: Calculate exact quotient

$80\div10 = 8$

Answer:

1. $9\frac{3}{7}$ (or 9 remainder 3)
2. $8\frac{1}{2}$ (or 8 remainder 4)
3. $7\frac{2}{3}$ (or 7 remainder 6)
4. $10$
5. $8\frac{7}{8}$ (or 8 remainder 7)
6. $8\frac{1}{3}$ (or 8 remainder 3)
7. $9\frac{1}{2}$ (or 9 remainder 4)
8. $8\frac{2}{3}$ (or 8 remainder 6)
9. $9\frac{7}{8}$ (or 9 remainder 7)
10. $8$