133. Find the sum of $318,7864+211,1246+76,1613+106,1914$ with an accuracy of 0.01.
Solution. Round all numbers, leaving a spare digit:

$$
318.786+211.125+76.161+106.191=712.263
$$

Round the spare digit and get the answer: 712.26.

134-136. Find with an accuracy of 0.01: