Question

The steps for solving 4.94 + 2.3 - 1.91 - 1.7 are given below. Which step is incorrect?

• A. Step 1: 7.24 - 1.91 - 1.7
• B. Step 2: 5.33 - 1.7
• C. Step 3: 5.16

Answer 1

The correct option is C Step 3: 5.16

4.94 + 2.3 - 1.91 - 1.7
= 7.24 - 1.91 - 1.7
= 5.33 - 1.7
= 3.63


So, the correct decimal number in step 3 should be 3.63 instead of 5.16.
Hence, step 3 is incorrect.