2nd Grade Review

Number Riddles

100

I have 1 hundred, 2 tens, and 4 ones. What number am I?

124

200

I have 2 hundreds, 8 tens, and 7 ones. What number am I?

287

300

I have 1 hundred, 11 tens, and 6 ones. What number am I?

216

400

I have 1 hundred, 15 tens, and 7 ones. What number am I?

257

500

I have 3 hundreds, 12 tens, and 9 ones. What number am I?

429

Add 100

100

160 + 100

260

200

340 + 100

440

300

532 + 100

632

400

723 + 100

823

500

899 + 100

999

Expanded Form

100

123

100 + 20 + 3 = 123

200

245

200 + 40 + 5 = 245

300

429

400 + 20 + 9 = 429

400

814

800 + 10 + 4 = 814

500

706

700 + 6 = 706

Subtract 10

100

100 - 10

90

200

230 - 10

220

300

347 - 10

337

400

109 - 10

99

500

307 - 10

297