updates | March 14, 2026

What is an unknown change problem?

Change Unknown addition problems are problems that require the student to find how many more need to be added to a number to arrive at a given total.

How do you start a word problem?

Generally, solving a word problem involves four easy steps:

  1. Read through the problem and set up a word equation — that is, an equation that contains words as well as numbers.
  2. Plug in numbers in place of words wherever possible to set up a regular math equation.
  3. Use math to solve the equation.

What are join word problems?

Teach students to solve word problems by understanding the context of the problem. Join Word Problems are the easiest Word Problem Type, yet they lay a good, solid foundation for future work within the other problem types.

What is a join problem?

JOIN PROBLEMS Join story problems all have an action that causes an increase. They involve three quantities: the initial amount, the change amount, and the resulting amount. When drawing join problems, teachers should use a consistent format.

What is a Put Together problem?

In a put-together situation, there are two separate quantities that are both referred to as addends in the CCSS (in our example, 3 goldfish and 2 goldfish). Then, when these two quantities are considered altogether, they become a new, single quantity, called total (in this case, 5 goldfish).

What type of word problems are there?

You can use three common types of word problems — part-part whole, separate and join and multiply and divide — for everything from counting pennies to calculating a tip.

What is an example of an equation?

In algebra, an equation can be defined as a mathematical statement consisting of an equal symbol between two algebraic expressions that have the same value. For instance, 3x + 5 = 14 is an equation, in which 3x + 5 and 14 are two expressions separated by an ‘equal’ sign.

What is a compare problem?

COMPARISON problems are the type of problems looked at this week, which involve figuring our similarities or differences between sets. Difference Unknown: One type of compare problem involves finding out how many more are in one set than another.

How do you take apart a number?

Subtract two-digit numbers by breaking the second number down into its tens and ones. Subtract the tens from the original first number, find the answer and then subtract the ones from that answer for the final result. Subtract 83 – 24 using the break apart method. Break 24 down into its parts: 20 + 4.

What is problem word?

Some common synonyms of problem are enigma, mystery, puzzle, and riddle. While all these words mean “something which baffles or perplexes,” problem applies to a question or difficulty calling for a solution or causing concern.

What is an inequality example?

For example, to solve -3x is less than 12, divide both sides by -3, to get x is greater than -4. And when graphing an inequality on a number line, less than or greater than is shown with an open dot, and less than or equal to or greater than or equal to is shown with a closed dot.