# Take a Penny

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### “Take a Penny”:

“Take a Penny” You will never subtract the same way again! © 2012 Elizabeth Hill:Tricks of the Trade

### “Take a Penny”:

“Take a Penny” We can use “Take a Penny” to make subtracting across zeros simple! © 2012 Elizabeth Hill:Tricks of the Trade

### “Take a Penny”:

“Take a Penny” Using take a penny takes this many step process… © 2012 Elizabeth Hill:Tricks of the Trade

### “Take a Penny”:

“Take a Penny” …To this 2 step process Do you notice something? NO REGROUPING!!! -1 -1 3999 - 2895 1104 © 2012 Elizabeth Hill:Tricks of the Trade

### First Things First:

First Things First Let’s practice literally taking a penny! \$0.10 How much is a dime worth? If you take a penny from a dime, how much do you have now? \$0.09 © 2012 Elizabeth Hill:Tricks of the Trade

### Let’s Try It Again:

Let’s Try It Again Let’s take a penny away! If you take a penny from a dollar, how much do you have now? \$0.99 © 2012 Elizabeth Hill:Tricks of the Trade

How About This One? Take a penny away! If you take a penny from five dollars, how much do you have now? \$4.99 © 2012 Elizabeth Hill:Tricks of the Trade

### Do You Have It?:

Do You Have It? T ake a penny! If you take a penny from ten dollars, how much do you have now? \$9.99 © 2012 Elizabeth Hill:Tricks of the Trade

### One More Time:

One More Time T ake a penny! If you take a penny from twenty dollars, how much do you have now? \$19.99 © 2012 Elizabeth Hill:Tricks of the Trade

### TAKE A PENNY:

TAKE A PENNY Let’s try the same concept a little differently! “Take a Penny” from 10 & it becomes 9 “Take a Penny” from 20 & it becomes 19 “Take a Penny” from 30 & it becomes 29 “Take a Penny” from 40 & it becomes 39 © 2012 Elizabeth Hill:Tricks of the Trade

Your Turn See if you can “Take a Penny” with your partner. “Take a Penny” from 60 & it becomes 59 “Take a Penny” from 100 & it becomes 99 “Take a Penny” from 200 & it becomes 199 “Take a Penny” from 500 & it becomes 499 © 2012 Elizabeth Hill:Tricks of the Trade

### “Take a Penny” Subtraction:

“Take a Penny” Subtraction Here is How it Works 300 - 245 -1 299 -1 - 244 5 5 Need to regroup across zeros? You need to “Take a Penny” . You need to be fair to the bottom number by doing the same to it. Now you can subtract without regrouping! © 2012 Elizabeth Hill:Tricks of the Trade

### “Take a Penny” Subtraction:

“Take a Penny” Subtraction Let’s Try It Together 5 0 - 28 -1 4 9 -1 - 27 2 2 Need to regroup across zeros? You need to “Take a Penny” . You need to be fair to the bottom number by doing the same to it. Now you can subtract without regrouping! © 2012 Elizabeth Hill:Tricks of the Trade

### “Take a Penny” Subtraction:

“Take a Penny” Subtraction Let’s Do Another One 80 - 36 -1 79 -1 - 35 4 4 Need to regroup across zeros? You need to “Take a Penny” . You need to be fair to the bottom number by doing the same to it. Now you can subtract without regrouping! © 2012 Elizabeth Hill:Tricks of the Trade

### “Take a Penny” Subtraction:

“Take a Penny” Subtraction Try It With Your Partner 7 0 - 54 -1 6 9 -1 - 53 6 1 Need to regroup across zeros? You need to “Take a Penny” . You need to be fair to the bottom number by doing the same to it. Now you can subtract without regrouping! © 2012 Elizabeth Hill:Tricks of the Trade

### “Take a Penny” Subtraction:

“Take a Penny” Subtraction Let’s Make It Harder 700 - 437 -1 699 -1 - 436 3 6 Need to regroup across zeros? You need to “Take a Penny” . You need to be fair to the bottom number by doing the same to it. Now you can subtract without regrouping! 2 © 2012 Elizabeth Hill:Tricks of the Trade

### “Take a Penny” Subtraction:

“Take a Penny” Subtraction Let’s Try Another One 8 00 - 547 -1 799 -1 - 546 3 5 Need to regroup across zeros? You need to “Take a Penny” . You need to be fair to the bottom number by doing the same to it. Now you can subtract without regrouping! 2 © 2012 Elizabeth Hill:Tricks of the Trade

### “Take a Penny” Subtraction:

“Take a Penny” Subtraction Try It With Your Partner 4 00 - 196 -1 399 -1 - 195 4 0 Need to regroup across zeros? You need to “Take a Penny” . You need to be fair to the bottom number by doing the same to it. Now you can subtract without regrouping! 2 © 2012 Elizabeth Hill:Tricks of the Trade

### “Take a Penny” Subtraction:

“Take a Penny” Subtraction Let’s Make It Harder 7000 - 4375 -1 6999 -1 - 4374 5 2 Need to regroup across zeros? You need to “Take a Penny” . You need to be fair to the bottom number by doing the same to it. Now you can subtract without regrouping! 6 2 © 2012 Elizabeth Hill:Tricks of the Trade

### “Take a Penny” Subtraction:

“Take a Penny” Subtraction Let’s Try Another One 5 000 - 3958 -1 4 999 -1 - 3957 2 4 Need to regroup across zeros? You need to “Take a Penny” . You need to be fair to the bottom number by doing the same to it. Now you can subtract without regrouping! 0 1 © 2012 Elizabeth Hill:Tricks of the Trade

### “Take a Penny” Subtraction:

“Take a Penny” Subtraction Try It With Your Partner 8000 - 6492 -1 7999 -1 - 6491 8 0 Need to regroup across zeros? You need to “Take a Penny” . You need to be fair to the bottom number by doing the same to it. Now you can subtract without regrouping! 5 1 © 2012 Elizabeth Hill:Tricks of the Trade

### “Take a Penny” Subtraction:

“Take a Penny” Subtraction Challenge Yourself 80 - 64 7 0 - 38 40 - 17 6 00 - 342 800 - 475 5 00 - 286 9000 - 7538 4 000 - 1843 30000 - 28542 © 2012 Elizabeth Hill:Tricks of the Trade