To find the differences without regrouping, we can look for pairs of numbers where the digits in each column (tenths and hundredths) allow for straightforward subtraction without needing to borrow from the next higher place value.
Let's evaluate each of the provided pairs:
-
45.20 - 29.59
- Tenths: 2 - 5 (needs regrouping)
- This one requires regrouping.
-
36.57 - 25.56
- Tenths: 5 - 5 (no regrouping needed)
- This one does not require regrouping.
-
100 - 89.5
- This can be rewritten as 100.00 - 89.50 which does not require regrouping.
- This one does not require regrouping.
-
29.8 - 28.3
- Tenths: 8 - 3 (no regrouping needed)
- This one does not require regrouping.
-
13.25 - 1.23
- Tenths: 2 - 2 (no regrouping needed)
- This one does not require regrouping.
Summary of Differences Without Regrouping:
- 36.57 - 25.56
- 100 - 89.5
- 29.8 - 28.3
- 13.25 - 1.23
Therefore, the differences that can be found without regrouping are:
- 36.57 - 25.56
- 100 - 89.5
- 29.8 - 28.3
- 13.25 - 1.23