## Unknown Numbers in Sums and Differences

#### Aligned To Common Core Standard:

**Grade 1 Measurement** - OA.8

How to outline a simple math word problem? Here are some steps that you can follow to outline a simple math problem: Read the entire problem at least 3 times. Take a quick scan on your very first attempt, and then the remaining two will be very slow so that you can gather important information hidden within the question. Try to make a pictorial representation of the problem. It will make the information more sensible and real to you. Use the information that you have gathered to make a table where the blank portions indicate all the information which is still unknown. Assign some kind of variable or letter for all the unknown data. It will allow you to make an equation. Translate the English terms in the form of a mathematical equation. It is one of the main issues in word problems that the problem is not expressed in a mathematical equation. Check if the equation you made makes any sense and is the equation using all the information mentioned. Use mathematic rules to solve the equation. Check your answer(s) to see if they make sense according to what information was provided. Cross-check your answers by using the answer in place of the information that was previously unknown. These worksheets have students compleet problems that undergo an addition or subtraction operation. This is a an algebra primer.

- Banana Thief Step-by-step Lesson-
You have got to hate it when a monkey steals your bananas.

- Visuals To Answer Problems Guided
Lesson - You work through 3 problems that all are basic word
problems with the assistance of the pictures.

- Explanation For Above - We
help you work through all the problems with cross outs and counting
strips.

- Who Done It? - These problems
have you look for answers to intermediate parts of the question.

- Matching Problems To Answers
- Find the answer that matches each question.

#### Guided Lessons

I received many positive comments on this section. I hope you find it useful.

- Guided Lesson Explanation 1 - This shouldn't move at a snail's pace.
- Guided Lesson Explanation 2 - Sea horses again! For real?
- Guided Lesson Explanation 3 - The great sandwich caper.
- Guided Lesson Explanation 4 - The cookie cross out.
- Step-by-step Lesson - Roy and his crazy ice cream bars.

#### Practice Worksheets

I created this section as a primer section for word problems.

- Independent Worksheet- Double digit numbers make an appearance here.
- Match Equations Worksheet- Visual to integer correlations are tough for some kids.
- Matching Worksheet- This might be very difficult for students who haven't worked with higher levels of numbers.
- Practice Worksheet - See if the mice help you solve this one.