Adding
Subtracting
Algebra
Word Problems
100

12,345 + 6,789= ?

19,134

100

23,456 − 9,876 =

13,580

100

 x + 345 = 1,234

x = 889

100

Library Books: Sarah has 450 books in her library. She donates 125 books to a local charity. Later, she buys 80 new books. How many books does she have now?

Answer: 450 − 125 + 80= 405

200

45,678 + 23,456 = ?

69,134

200

50,000 − 17,845 =

32,155

200

678 − y= 245

y=433

200

Class Supplies: A teacher started the year with 600 pencils. After giving away 250 pencils to students, she received a donation of 150 pencils. How many pencils does she have now?

600 − 250 + 150 = 500 pencils

300

1,234+9,876=

11,110

300

12,345 − 8,679 =

3,666

300

1,200 + a = 3,456

 a=2,256

300

Concert Tickets: Tom had 150 concert tickets. He sold 45 tickets to his friends and then bought 30 more tickets. How many tickets does he have now?

150− 45 + 30 = 135 tickets

400

78,910 + 12,345 =

91,255

400

100,000 − 34,567 =

65,433

400

b − 512 = 1,000

b=1,512

400

Mr. Skibin ate 7,898 dumplings. He also ate 466 pieces of lasagna. He ALSO ate 24 poorly behaved students. How many things did he eat all together?

7,898 + 466 + 24 = 8,388

So, Mr. Skibin ate a total of 8,388 things altogether.

500

100,000 + 25,678 =

125,678

500

45,678 − 29,845 =

15,833

500

3,250 + c = 4,500

c=1,250

500

Mr. Skibin went snowboarding last weekend. He completed 15 runs down the mountain. He also took 3 breaks to enjoy hot chocolate and helped 5 fellow snowboarders who had fallen. How many activities did Mr. Skibin do altogether while snowboarding?

15+3+5=23

So, Mr. Skibin participated in a total of 23 activities while snowboarding.