0.3×
–
2÷
–
3+0.5
0.3 × -2 ÷ -3 + 0.5
First, we'll evaluate the multiplication:
0.3 × -2 = -0.6
Next, we'll evaluate the division:
-0.6 ÷ -3 = 0.2
Finally, we'll add 0.5:
0.2 + 0.5 = 0.7
So, the answer is 0.7.
–
0.03×(
–
6÷
–
1.5–8)
First, let's solve the expression inside the parentheses:
-1.5 - 8 = -9.5
Next, let's solve the multiplication:
0.03 × -9.5 = -0.285
Therefore, the final answer is -0.285.
To solve this expression step-by-step, you should follow the order of operations, also known as PEMDAS:
1. First, perform the division: 2 ÷ 3, which equals 0.6667 (rounded to four decimal places).
2. Next, multiply the result by 0.3: 0.6667 × 0.3 = 0.20001 (rounded to five decimal places).
3. Finally, subtract 0.20001 from 0.5: 0.5 - 0.20001 = 0.29999 (rounded to five decimal places).
To solve the expression 0.3 × - 2 ÷ - 3 + 0.5, we need to follow the order of operations (also known as PEMDAS), which stands for Parentheses, Exponents, Multiplication and Division (from left to right), and Addition and Subtraction (from left to right).
Let's break down the expression step by step:
Step 1: Division (-2 ÷ -3)
To divide two negative numbers, we divide them as if they were positive numbers, and then determine the sign of the result by considering the number of negative signs. In this case, -2 ÷ -3 simplifies to 2 ÷ 3. Since both numbers are positive, the result is positive. So, -2 ÷ -3 = 2/3.
Expression becomes: 0.3 × (2/3) + 0.5
Step 2: Multiplication (0.3 × 2/3)
To multiply a decimal number with a fraction, you can convert the fraction to a decimal number by dividing the numerator by the denominator. In this case, 2 divided by 3 is equal to 0.6667 (rounded to four decimal places).
Expression becomes: 0.3 × 0.6667 + 0.5
Step 3: Multiplication (0.3 × 0.6667)
Multiplying 0.3 by 0.6667 gives us the result of 0.20001 (rounded to five decimal places).
Expression becomes: 0.20001 + 0.5
Step 4: Addition (0.20001 + 0.5)
Adding 0.20001 and 0.5 gives us the result of 0.70001 (rounded to five decimal places).
The final answer is 0.70001.