Subtraction When you subtract you always begin with the ones place and move left!

345-231 114

Subtraction with regrouping

We have to regroup when we cannot subtract the numbers in a specific place (hint- if the top

number is SMALLER than the bottom you have to

regroup).

343 -236

When you regroup you are taking 1 from the neighbor and

giving 10 to the place you cannot subtract.

3 4 3 -2 3 6

Then you stop and subtract the ones place. Now it is time to subtract the tens place- check it to see if you can!!!!

3 4 3-2 3 6 1 0 7

Start here!

Yikes I can’t subtract that!

Take 1 from the tens place and give 10 to the ones place

3 13

Can I subtract the tens place….YES!! No regrouping this time!

3 13

REGROUPING!!!

Sometimes you have to regroup more than one time! Always follow these steps when you regroup:

Step 1: Ask yourself “can I subtract this?” if you can’t you need to regroup.

Step 2: Time to regroup! ALWAYS take from your neighbor first!

Take 1 and give 10!!!

This means the neighbor goes down by 1 and you add a tens place to the number that you can’t subtract.

Step 3: REPEAT!! Move to the next place and do steps 1 and 2 over again!!

Estimation and Subtraction

When do I estimate?

In subtraction word problems there is a word that tells you when to estimate (round). That word is ABOUT.

Estimating is suppose to make it faster for you to solve the problem.

The first thing you have to do is round both numbers to the largest place.

Then you subtract the two numbers that you rounded.

EX.) 345 ---- 300 -123---- -100 200

Directions: Find the difference.

1.) 6,948

- 7,145

Directions: Write the correct answer.

9.) Jennie has 354 pencils. Miguel has 189 pencils. How many more pencils does Jennie have than Miguel?

10.) Cindy earned $6.25 babysitting. Marsha earned $4.76 washing dishes. How much more money did Cindy earn than Marsha?

2.) $5.75 - $2.24

3.) 7,714 - 3,226

4.) 4,526 - 2,313

11.) Ms. D’Angelo has 1,743 M&M’s. She gave 269 to Mr. Aaron. How many M&M’s does she have left?

12.) Mr. Phillips had 3,634 hamburgers. He gave 246 hamburgers to Mr. Aaron. How many hamburgers does Mr. Phillips have left?

Subtracting multi-digit numbers with and without regrouping

5.) 3,328 - 1,265

6.) $11.52 - $11.35

7.) 8,436

- 4,199

8.) 733 - 557

Directions: Find the difference.

Directions: Write the correct answer.

4.) 7,180 - 5,965

5.) $67.24 - $28.48

6.) 2,321 - 1,784

1.) 4,382 - 3,851

2.) $50.23 - $17.72

3.) 6,512 - 2,345

7.) Khiry jumped 2,345 feet. Hunter jumped 1,497 feet. How much farther did Khiry jump than Peter?

8.) Greg earned $38.67 on Monday. He earned $22.98 on Friday. How much more money did Greg earn on Monday than on Friday?

19) Ms. D’Angelo has 4,836 tickets . She gave 2,919 to her students. How many tickets does she have left?

10.) Bobby bought 3,145 tickets at the fair. He gave 1,549 tickets to Greg. How many tickets does Bobby have left?

Subtracting multi-digit numbers with and without regrouping

Directions: Find the difference.

Directions: Write the correct answer.

4.) 2,005 - 1,965

5.) $80.00 - $54.97

6.) 8,000 - 1,562

1.) 306 - 158

2.) $6.00 - $2.86

3.) 7,050 - 2,345

7.) Terrien jumped 700 inches. Latoya jumped 387 inches. How much longer did Terrien jump than Latoya?

8.) Mr. Wayne had $40.00. He bought two hamburgers and two fries for $8.76. How much money does Mr. Wayne have left to spend tomorrow at McDonalds?

19) Mrs. Brantley had $4.03. She bought a soda for $1.89. How much change will Mrs. Brantley get back?

10.) Logan has a sticker collection with 9,000 stickers. He gave 3,645 stickers to his brother Peter. How many stickers does Logan have left?

Subtracting multi-digit numbers with and without regrouping

Directions: Estimate to find the difference.

Directions: Write the correct answer.

7.) Cindy ran 489 yards. Jan ran 167 yards. About how much farther did Cindy run than Jan?

8.) Ben had $25.89. He bought a new game for $22.99. About how much money does Ben have left to spend?

19) Ms. D’Angelo had $6.31. She bought a dozen cookies for $3.76. About how much change will Ms. D’Angelo get back?

10.) Marsha has a stamp collection with 5,915 stamps. She sold 2,461 stamps to a friend. About how many stamps does Marsha have left?

1.) 727 - 154

2.) $5.84 - $3.25

3.) 6,467 - 3,378

4.) 8,574 - 1,941

5.) $28.33 - $14.67

6.) 9,213 - 1,924

Subtracting multi-digit numbers with and without regrouping