Question

Gustav is using front-end estimation. In estimating seventy-two point nine three minus twenty-eight point zero seven, Gustav follows the steps below. Where did he go wrong?

Step 1: seventy-two minus twenty-eight equals forty-four
Step 2: zero point nine three minus zero point zero seven is approximately equal to zero
Step 3: forty-four plus zero equals forty-four
Step 4: seventy-two point nine three minus twenty-eight point zero seven is approximately equal to forty-four

Step 1

Step 2

Step 3

Step 4

Answer 1

@Melodysim