Difference between revisions of "How to Add and Subtract One-Digit Numbers"

(For young kids who want to learn how to add and subtract one digit numbers (no negatives!).)
 
(Added the subtracting part.)
 
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Let's say I wanted to add <math>1</math> <math>+</math> <math>5</math>. When you add one to any number, you get the next number. So here is the counting: <math>1</math>, <math>2</math>, <math>3</math>, <math>4</math>, <math>5</math>, and our answer is next, <math>6</math>. So, <math>5</math> <math>+</math> <math>1</math> <math>=</math> <math>6</math>
 
Let's say I wanted to add <math>1</math> <math>+</math> <math>5</math>. When you add one to any number, you get the next number. So here is the counting: <math>1</math>, <math>2</math>, <math>3</math>, <math>4</math>, <math>5</math>, and our answer is next, <math>6</math>. So, <math>5</math> <math>+</math> <math>1</math> <math>=</math> <math>6</math>
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Another way to do this would be to count on my fingers. I have <math>5</math> fingers on each hand. I hold out one hand, and put <math>1</math> finger up on the other. Then, I count all the fingers, giving me: <math>5</math> <math>+</math> <math>1</math> <math>=</math> <math>6</math>.
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To solve <math>7</math> <math>-</math> <math>3</math>, hold up <math>7</math> fingers. Then, close 3, giving you <math>7</math> <math>-</math> <math>3</math> <math>=</math> <math>4</math>

Latest revision as of 21:27, 27 January 2021

Let's say I wanted to add $1$ $+$ $5$. When you add one to any number, you get the next number. So here is the counting: $1$, $2$, $3$, $4$, $5$, and our answer is next, $6$. So, $5$ $+$ $1$ $=$ $6$

Another way to do this would be to count on my fingers. I have $5$ fingers on each hand. I hold out one hand, and put $1$ finger up on the other. Then, I count all the fingers, giving me: $5$ $+$ $1$ $=$ $6$.

To solve $7$ $-$ $3$, hold up $7$ fingers. Then, close 3, giving you $7$ $-$ $3$ $=$ $4$

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