Question

example 2
estimate 5.26 + 1.93 by rounding to the nearest one.
5.26 →
1.93 →
add.
+ =
the sum is about .

Explanation:

Step1: Round 5.26 to nearest one

To round 5.26 to the nearest one, we look at the tenths place. The digit in the tenths place is 2, which is less than 5. So we round down. Thus, \( 5.26\approx5 \).

Step2: Round 1.93 to nearest one

To round 1.93 to the nearest one, we look at the tenths place. The digit in the tenths place is 9, which is greater than 5. So we round up. Thus, \( 1.93\approx2 \).

Step3: Add the rounded numbers

Now we add the rounded numbers: \( 5 + 2 = 7 \).

Answer:

5.26 → \( 5 \)
1.93 → \( 2 \)
\( 5 + 2 = 7 \)
The sum is about \( 7 \)