Question

In each sentence below circle the keywords or phrases that indicate a mathematical operation write the symbol for The operation above the words or phrases. Write an expression for each sentence

1: The product of a number and 8÷4
2: five times a number decreased by eight
3: The sum of the square of a number and a second number
4: three times the difference of a number and seven
5: 9.85 less than the product of 37 and a number

Answer 1

See below

Explanation:

Let the number be n or m

1: The product of a number and 8÷4

• n × 8÷4
• product = multiplication

2: five times a number decreased by eight

• 5×n - 8
• times = multiplication, decrease = subtraction

3: The sum of the square of a number and a second number

• n^2 + m
• sum = addition

4: three times the difference of a number and seven

• 3×(n - 7)
• times = multiplication, difference= subtraction

5: 9.85 less than the product of 37 and a number

• 37×n - 9.85
• product = multiplication, less = subtraction