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Expanded Form
Standard Algorithm
Base Ten Strategy
Standard Form W/Regrouping
Base Ten Strategy W/Regrouping
100

What is the expanded form of this number:

345

300+40+5

100

In what place value column do you start to subtract down in an equation?

You start in the ones place.

100

When drawing base ten blocks, what shape signifies, or shows, a ten?

A skinny rectangle or a line.

100

Finish the poem by filling in the blanks.

Adds up to 9 ___________!
____________ the extra next door!

Adds up to 9 everything’s fine!
10 or more take the extra next door!

100

When drawing base ten blocks, what shape signifies, or shows, a hundred?

A large square.

200

Use the expanded form strategy to solve:

231+267

  231 --> 200+30+1
+267 --> 200+60+7

              400+90+8 = 498

200

Use the standard algorithm to solve the problem:

312+657

  312
+657
  969

200

Use the base ten blocks strategy to solve the problem:

872+105

*Written vertically

*HTO chart drawn

*Answer: 977

200

Use the standard algorithm to solve the problem:

546+436

    1
  546
+436
  982


200
Use the base ten blocks strategy to solve this problem:


473+268

*Written vertically

*HTO chart drawn

*Answer: 741

300

Use the expanded form strategy to solve:

516+312

  516 --> 500+10+6
+312 --> 300+10+2

               800+20+8 = 828

300

Use the standard algorithm to solve the problem:

402+280

  402
+280 
  682

300

Use the base ten blocks strategy to solve the problem:

449+430

*Written vertically

*HTO chart drawn

*Answer: 879

300

Use the standard algorithm to solve the problem:

155+238

    1
  155
+238
  393

300

Use the base ten blocks strategy to solve this problem:

437+248

*Written vertically

*HTO chart drawn

*Answer: 685

400

Use the expanded form strategy to solve:

447+411

  447 --> 400+40+7
+411 --> 400+10+1

               800+50+8 = 858

400

Use the standard algorithm to solve the problem:

  868+21

  868
+  21
  889

400

Use the base ten blocks strategy to solve this problem:

112+221

*Written vertically

*HTO chart drawn

*Answer: 333

400

Use the standard algorithm to solve:

 589+243

  11
  589
+243 
   832

400

Use the base ten blocks to solve this problem:

269+471

*Written vertically

*HTO chart drawn

*Answer: 740

500

Use the expanded form strategy to solve:

230+413+154

  230 --> 200+30+0
+413 --> 400+10+3
+154 --> 100+50+4

               700+90+7 = 797

500

Use the standard algorithm strategy to solve this problem:

345+112+232

  345
+112
+232
  689

500

Use the base ten blocks strategy to solve the problem:

525+340

*Written vertically

*HTO chart drawn

*Answer: 865

500

Use the standard algorithm to solve:

289+343+214

  11
  289
+343
+214 
  846

500

Use the base ten blocks strategy to solve this problem:

382+238

*Written vertically

*HTO chart drawn

*Answer: 620