## Add and Subtract Multi-Digit Whole Numbers

#### Aligned To Common Core Standard:

**Grade 4 Base Ten** - 4.NBT.4

How to Add and Subtract Multi-Digit Whole Numbers?
Addition and subtraction are the most basic and essential concepts in mathematics. Whether one is grade four or in college, people have to bring addition and subtraction in use in their daily lives. Addition and subtraction lay the grounds for advanced mathematical concepts. After learning single-digit addition and subtraction, it is time that you move to the addition and subtraction of the multi-digit whole numbers.
Do not let the name scare you, as addition and subtraction are always easy, whether it involves single-digit or five digits.
**Strategy 1:** Using concrete manipulatives and place values
The easiest way to get a grasp of the concept of addition and subtraction of multi-digit numbers is to use the concept of regrouping using concrete manipulatives.
Using this strategy, the kids can visually determine the place values. It will even help them grasp the concept of carrying and borrowing.
**Strategy 2:** Split-Addition and Split-Subtraction
The second most effective strategy to solve multi-digit addition and subtraction is to adopt the practice of splitting. Splitting is very easy to perform strategy if one grasps the concept of splitting perfectly.
Example;
647+285
Splitting 647; 600+40+7
Splitting 285; 200+80+5
Even the splitting technique is making use of the concept of place values.
Students learn how to add and subtract mixed whole digit values in this selection of worksheets.

### Printable Worksheets And Lessons

- Adding and Subtracting
Large Numbers Step-by-Step Lesson- Add four-digit numbers and
subtract four million and change by tens of thousands.

- Guided Lesson
- Subtract and add more big numbers. Find missing numbers in addends
and subtrahends.

- Guided Lesson Explanation
- I went a bit medieval, if you would, on this one. 4 pages is a
bit gruesome, but it is deep in content.

- Practice Worksheet
- A whole bunch of practice for you on all these skills.

- Matching Worksheet - Match all the missing parts and answers to their complement.

#### Homework Sheets

I purposely off set the alignment of the first sheet to make students have to rewrite the problem. This really helps them understand the skill.

- Offset Homework 1 - Complete the following problems.
- Homework 2 - We end up borrowing column that becomes 13-5.
- Homework 3 - Carry and borrow as needed.

#### Practice Worksheets

You will find sum and difference on number 1. Number 2 and 3 work on each skill individually.

- Practice 1 Both - We work with the hundred-thousand values here.
- Practice 2 Subtract - Big differences can be found here.
- Practice 3 Add - A bit crabby here.