Why is mental addition and subtraction important when you learn more difficult concept

A quality control company was hired to study the length and made a sticks produced by certain company the team carefully measured the length of mini mini mini sticks and a distribution seems to be slightly skewed to the right with a mean of 99.

What's is two plus two

9. A vendor is selling Coke and Sprite. He sold three times as many Cokes as Sprites. If he sells 76 sodas in all, how many Cokes were sold? How many Sprites?

The cycles for two different events are shown in the table. each of these events happened in year 2000. what is the next year in which both will happened

What is 3 3/4 as a fraction

if the minimum wage in 2017 was $13.15 and in 2018 it is $14.45, what percent did minimum wage increase

Last one 11342+151531

Evaluate a2+ab-b2+5 when a=2 and b=3

Which statement is the Law of Detachment? If p implies q is a true statement and p is true, then q is true. If p implies q is a true statement and q is true, then p is true. If p implies q is a true statement and q is true, then q is true.

Graduation is 3 years away and you want to have $750 available for a trip. If your bank is offering a 3-year CD (certificate of deposit) paying 2.2% simple interest, how much do you need to put in this CD to have the money for your trip?