Common quantitative relations:
(1) working efficiency × working time = total workload, total workload ÷ working efficiency = working time, total workload ÷ working time = working efficiency.
(2) Addendum+Addendum = sum, and-one addend = another addend.
(3) The minuend-subtrahend = difference, the minuend-subtrahend = subtrahend, and the difference+subtrahend = minuend.
(4) Factor × factor = product, and product ÷ one factor = another factor.
(5) Divider = quotient, dividend = divisor, quotient × divisor = dividend.
Extended data:
Equivalence relation is a formula to express the equal relation between quantities. If it is required to be solved by an equation, it is necessary to find out the equivalence relation in the problem and list the equivalence relation.
For example, a workshop originally planned to produce 10000 machine parts, but now it has been produced for 8 hours, and 4,800 more will be produced to complete the task. How many machine parts are produced per hour on average?
There is an equal relationship between the number of questions:
Output per unit time × production time = how much was produced.
Total planned output-already produced = required to be produced.