Select the correct combination of mathematical signs that can sequentially…
2022
Select the correct combination of mathematical signs that can sequentially replace the * signs to balance the equation.
370 *221 *17 * 16 *31 * 11
- A.
+, +, ×, –, =
- B.
–, ÷, =, +, ×
- C.
+, ÷, =, ×, –
- D.
×, +, ÷, –, =
Attempted by 24 students.
Show answer & explanation
Correct answer: B
To balance the equation 370 * 221 * 17 * 16 * 31 * 11, substitute the signs from Option 2:
Equation: 370 − 221 ÷ 17 = 16 + 31 × 11
Apply order of operations (Division and Multiplication first):
Left side: 221 ÷ 17 = 13 → 370 − 13 = 357
Right side: 31 × 11 = 341 → 16 + 341 = 357
Since 357 = 357, the equation is balanced.
Final Answer: Option 2