Vocab Collab
Mental Subtraction
3 and 4 Digit -
Balancing Equations
Word Problems
100

What are these called?

0 1 2 3 4 5 6 7 8 9

Digits
100

90 − 27

63

100

524 − 213

311

100

_____ - 10 = 47 - 27

30

100

Liam collected 842 stickers for a school project. He gave 275 stickers to his classmates. How many stickers does Liam have left?

Liam has 567 stickers left.

200

When referring to the position in a 4 digit number, we mean a digit's _________ __________.

place value

200

63 − 8

55

200

432 − 158

274

200

_________ + 10 = 87 - 10

67

200

A library had 1,456 books at the beginning of the year. Over the summer, 327 books were checked out. How many books are still in the library?

1,129 books were left in the library.

300

The result of subtracting one number from another. It represents the numerical value between two numbers, indicating how much one is greater or smaller than the other.

Difference

300

400 − 125

275

300

701 − 386

315

300

45 − 19 = ___ − 20

46

300

A school ordered 325 new books for the library. On Monday, 148 books were delivered. On Tuesday, 97 more books arrived. How many books still need to be delivered?

➡️ Step 1: Add the books delivered: 148 + 97 = 245

➡️ Step 2: Subtract from the total ordered: 325 − 245 = 80 books

80 books need to be delivered. 

400

We can use rounding to come up with an _____________ as a way to check our answers.

estimate

400

72 − 39

33

400

6,241 − 3,120

3,121

400

___ − 32 = 58 − 30

60

400

A factory produced 1,245 toys in January. In February, it produced 1,038 toys. If 1,100 toys were sold in total during those two months, how many toys are left in the factory?

➡️ Step 1: Add total production: 1,245 + 1,038 = 2,283

➡️ Step 2: Subtract toys sold: 2,283 − 1,100 = 1,183 toys

1,183 toys were left in the factory.

500

Mrs. Nelson's favorite "Show Your Work" song:

When in doubt, write it _________!

out

500

1,000 − 498

502

500

5,003 − 2,478

2,525

500

1,456 - 327 = ________ - 100

1,229

500

A concert venue had 3,250 seats available for a weekend event. On Saturday, 1,478 tickets were sold. On Sunday, 1,236 tickets were sold. After the weekend, 85 tickets were refunded. How many tickets were used in total?

➡️ Step 1: Add Saturday and Sunday ticket sales: 1,478 + 1,236 = 2,714

➡️ Step 2: Subtract refunded tickets: 2,714 − 85 = 2,629 tickets used

2,629 tickets were used in total for the weekend event.