Question

1. use basic facts to find the following quotients

5,400 ÷ 9 = ____ 640 ÷ 8 = __________

Explanation:

Step1: Solve \( 5400 \div 9 \)

Recall the basic division fact: \( 54 \div 9 = 6 \). Since \( 5400 \) is \( 54 \times 100 \), we have \( 5400 \div 9=(54\times100)\div9 = (54\div9)\times100 = 6\times100 = 600 \).

Step2: Solve \( 640 \div 8 \)

Recall the basic division fact: \( 64 \div 8 = 8 \). Since \( 640 \) is \( 64 \times 10 \), we have \( 640 \div 8=(64\times10)\div8=(64\div8)\times10 = 8\times10 = 80 \).

Answer:

\( 5400 \div 9 = \boldsymbol{600} \)
\( 640 \div 8 = \boldsymbol{80} \)