①The display is dim or bright and dark after turning on. First, measure whether the voltage of the battery used is normal. If it is normal, you can further check whether the battery spring pressure is sufficient and whether the contact is good. If there is any problem, you can stretch the spring or use…
1. Use a calculator to calculate (elementary calculations can be completed). 2. Use a calculator to estimate. If you use rational numbers to approximate irrational numbers in the eighth grade, you need to use a calculator to approximate the irrational numbers with rational numbers. In the second volume of the ninth grade, it is faster…
We often use calculators in our life and study, so do you know what issues should be considered when buying a calculator? Let’s take a look at it together. 1. Choose according to the usage scenario The same kind of calculators are suitable for different scenarios. For example, calculators used for teaching are mostly advanced…
