Addition (加法)
Basic addition helps children understand the relationship between numbers.
基础的加法帮助孩子理解数字间的关系。
Add (加)
Please add 5 to 8 to get the result of this simple equation.
请把5加到8上，得到这个简单算式的结果。
Plus (加)
Three plus four equals seven in basic arithmetic.
在基础算术中，三加四等于七。
Sum (和)
The sum of 9 and 6 is 15, which is a multiple of 3.
9和6的和是15，它是3的倍数。
Minus (减去)
Ten minus three leaves seven, showing a basic subtraction.
十减去三余七，展示了基础的减法运算。
Subtract (减)
You need to subtract 2 from 7 to find the correct answer.
你需要从7中减去2来找到正确答案。
Difference (差)
The difference between 12 and 5 is 7, found by subtraction.
12和5的差是7，通过减法得出。
Margin (差额)
The margin between the two teams' scores was only two points.
两队得分的差额仅为两分。
Multiply (乘)
Multiply 6 by 7 to get the product of these two numbers.
把6乘以7，得到这两个数的积。
Times (乘)
Four times five is twenty, a common multiplication fact.
四乘以五是二十，这是一个常见的乘法事实。
Product (积)
The product of 8 and 3 is 24, calculated by multiplication.
8和3的积是24，通过乘法计算得出。
Divide (除)
Divide 20 by 4 to see how many equal groups there are.
把20除以4，看看能分成多少个相等的组。
Calculate (计算)
Scientists calculate the distance using precise measurement tools.
科学家用精密测量工具计算距离。
Compute (计算)
The computer can compute complex equations in seconds.
计算机能在几秒内计算复杂方程。
Make (合计为/计算)
All the daily expenses make $120 in total for the week.
所有日常开销合计为本周共120美元。
Work out (计算出)
Can you work out the total cost of these three items?
你能计算出这三件物品的总费用吗？
Estimate (估计)
We need to estimate how many guests will attend the party.
我们需要估计会有多少客人参加聚会。
Overestimate (高估)
Don't overestimate the time needed to finish the task.
不要高估完成这项任务所需的时间。
Underestimate (低估)
It's easy to underestimate the difficulty of climbing that mountain.
很容易低估攀登那座山的难度。
Count (记数)
The teacher asked the students to count from 1 to 100 aloud.
老师让学生们大声从1数到100。
Add up (加起来)
Add up all the numbers in the list to check the total.
把列表中的所有数字加起来核对总数。
Add up to (合计)
These small savings add up to a large amount over a year.
这些小额储蓄一年合计起来是一大笔钱。
Come to (共计)
The total bill for dinner comes to $45 including tax.
晚餐账单含税后共计45美元。
Total (合计)
Please total the sales figures for each region separately.
请分别合计各区域的销售数据。
