Show:
Addition Part 1
Value of the Digit
Addition Part 2
Subtraction
Missing Part
100
Use Whole-First Number Strategy. 

345 + 232 = ?

345 + 200 = 545

545 + 30 = 575

575 + 2 = 577

100
371 What is the value of the ONES place?
1 (one)
100
Use Whole-First Number.

456 + 345

456 + 300 = 756

756 + 40 = 796

796 + 5 = 801

100
Use Subtract Hundreds, Tens, Ones strategy.

657-433

600 - 400 = 200

50 - 30 = 20

7 - 3 = 4

200 + 20 + 4 = 224

100

Find the missing part. 

123 + ___ = 357
123 + 200 = 323           200 + 30 + 4 = 234

323 + 30 = 353             123 + 234 = 357

353 + 4 = 357

200
Use Add the Hundreds, Tens, Ones. 

678 + 111 = ?

600 + 100 = 700

70 + 10 = 80

8 + 1 = 9

700 + 80 + 9 = 789

200
873 What is the value of the TENS place?
70 (seventy)
200

Use Hundreds, Tens, Ones.

Grayson ate 468 jolly ranchers in one year. The next year, he only ate 256 jolly ranchers. How many jolly ranchers did Grayson eat in both years combined?
400 + 200 = 600

60 + 50 = 110

8 + 6 = 14

600 + 110 + 14 = 724

200

Use Whole-First Number.

Dylan, Bennett, and Beatrice have $467 altogether. They give $235 of it to charity. How much do they have left now?
467 - 200 = 267

267 - 30 = 237

237 - 5 = 232


200

Find the missing part.

___ + 345 = 589
589 - 200 = 389            200 + 40 + 4 = 244

389 - 40 = 349              244 + 345 = 589

349 - 4 = 345

300
Use Add the Hundreds, Tens, and Ones.

457 + 322 = ?

400 + 300 = 700

50 + 20 = 70

7 + 2 = 9

700 + 70 + 9 = 779

300
802 What is the value of the TENS place?
0
300

Use Whole-First Number.

Phenix, Eden, and Julianna sold 547 boxes of Girl Scout Cookies. The Girl Scouts in Mrs. Coleman's class sold 347 Girl Scout cookies. How many did both sell altogether?
547 + 300 = 847

847+ 40 = 887

887 + 7 = 894

300

Use Subtract the Hundreds, Tens, Ones.

Cooper had 145 baseballs. He hit 104 out of the park. How many does Cooper have left now?
100 - 100 = 0

40 - 0 = 40

5 - 4 = 1

0 + 40 + 1 = 41

300
Find the missing part.

236 + ______ = 579

579 - 300 = 279         300 + 40 + 3 = 343

279 - 40 = 239           236 + 343 = 579

239 - 3 = 236

400
Use Hundreds, Tens, and Ones. 

Charlie has 614 erasers. Tessa gave him 336 more for his birthday. How many erasers does Charlie have now?

600 + 300 = 900

10 + 30 = 40

4 + 2 = 6

900 + 40 + 6 = 946

400
295 What is the value of the HUNDREDS place?
200 (two hundred)
400

Use Whole-First Number.

Fox, Edgar, and Isabel spent $379 altogether at the book fair. Ben, Madelyn, and Breanna spent $563 altogether the next day. How much money did all the students spend at the book fair both days?
379 + 500 = 879

879 + 60 = 939

939 + 3 = 942

400
Use Whole-First Number.

567 - 344

567 - 300 = 267

267 - 40 = 227

227 - 4 = 223


400

Find the missing part.

____ + 156 = 333

156 + 100 = 256        100 + 50 + 20 + 7

256 + 50 = 306          100 + 70 + 7 = 177

306 + 20 = 326          177 + 156 = 333

326 + 7 = 333

500

Use either Whole-First Number or Hundreds, Tens, and Ones.

456 students are in kindergarten and first grade. 342 students are in second and third grade. How students students are in all of the grades?
456 + 300 = 756             400 + 300 = 700

756 + 40 = 796               50 + 40 = 90

796 + 2 = 798                 6 + 2 = 8

                                 700 + 90 + 8 = 798



500
963 What is the value of the HUNDREDS place?
900
500

Use Whole-First Number or Add the Hundreds, Tens, Ones.

Logan and Cole have 672 stickers. Anthony and Ella have 245 stickers. How many stickers do they have combined?
672 + 200 = 872             600 + 200 = 800

872 + 40 = 912               70 + 40 = 110

912 + 5 = 917                 2 + 5 = 7

                                800 + 110 + 7 = 917

500
Use Whole-First Number 

745 - 562 = ?

745 - 500 = 245                          

245 - 60 = 185    

185 - 2 = 183

500

Use the Counting on strategy.

____ + 456 = 834

456 + 300 = 756        300 + 60 + 20 + 8

756 + 60 = 806          300 + 80 + 8 = 388

806 + 20 = 826          388 + 456 = 834

826 + 8 = 834