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Arithmetic Questions & Answers

Q:
7. The temperature of a cup of coffee decreases by \( 20 \% \) every minute. If the initial temperature is 80 degrees Celsius, what will be the approximate temperature after 5 minutes? A. 20 degrees Celsius B. 26 degrees Celsius C. 32 degrees Celsius D. 64 degrees Celsius
Q:
70. ข้อใดมีตัวประกอบเฉพาะน้อยกว่า 2 จำนวน 1. 55 2. 56 3. 58 4. 59
Q:
4) อัตราสวนผสมคอนกรีตประกอบด้วย หิน : ปูน : ทราย เป็น \( 4: 1: 2 \) ถ้าต้องการ ผสม คอนกรีตหนัก 280 กรัม จะต้องใช้ หิน ปน และทรายอย่างละกี่ง
Q:
70. ข้อใดมีตัวประกอบเฉพาะน้อยกว่า 2 จำนวน 1. 55
Q:
2. \( \frac{12}{4}-\frac{18}{10}= \)
Q:
If you applied the divisibility test for 8 to determine whether or not the natural number 645064956798 is divisible by 8 , you would check to see if 8 divides what number?
Q:
1) João recebeu um aumento de \( 10 \% \) em seu salário, que chegou a R \( \$ 5.650,00 \). Qual era o salário de João antes do aumento? \( \frac{10}{100}=5650 \)
Q:
If you applied the divisibility test for 11 to determine whether or not the natural number 8238408398 is divisible by 11 , you would check to see if 11 divides what number?
Q:
If you applied the divisibility test for 9 to determine whether or not the natural number 10959362 is divisible by 9 , you would check to see if 9 divides what number?
Q:
\( 30 \div 3 \div 10 \times 2+6 \) of \( 4 \div 6+30 \)

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