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Use front-end rounding to round each number. Then add or subtract the rounded numbers to get an estimated answer. Finally, find the exact answer.

The estimate is already done. Now find the exact answer.

Regroup 1 tenth as [tex]$\square$[/tex] 7 hundredths from 9 tenths, and [tex]$\square$[/tex] add it to 7 hundredths. So, strike out 7, and write [tex]$\square$[/tex] above the 7 in the hundredths column, and strike out 9 and write [tex]$\square$[/tex] in the



Answer :

GinnyAnswer
Let's solve the problem of regrouping and finding the exact answer step-by-step.

### Step 1: Understand the Problem
You have 9 tenths and 7 hundredths initially. You need to regroup 1 tenth.

### Step 2: Regroup 1 Tenth
When you regroup 1 tenth, you convert it into 10 hundredths. So, we need to subtract 1 from the tenths place and add 10 to the hundredths place.

### Step 3: Subtract 1 Tenth
- Tenths initial: 9
- Subtract 1 tenth
- Tenths remaining: [tex]\(9 - 1 = 8\)[/tex]

### Step 4: Add Regrouped Hundredths
- Hundredths initial: 7
- Add the regrouped 10 hundredths
- Hundredths total: [tex]\(7 + 10 = 17\)[/tex]

### Step 5: Final Result
So, after regrouping 1 tenth to hundredths:
- Tenths remaining: 8
- Hundredths total: 17

Therefore, the exact answer is:
- Tenths: 8
- Hundredths: 17

Place these values in the given slots:
- Regroup 1 tenth as 10 hundredths from 9 tenths,
- Add it to 7 hundredths. So, strike out 7, and write 17 above the 7 in the hundredths column, and strike out 9 and write 8 in the tenths column.

These values match the derived solution.

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