Show:
Place Value
Rounding
Adding By Place Value
Breaking One # Apart
Standard Algorithm
Partial Product
100

389

Place Value of the 8

Tens

100

568 

Rounded to the nearest ten

570

100

736+162=

898

700+100=800

30+60=90

6+2=8

100

431+235=

666

431+200=631

631+30=661

661+5=666

100

438+164=

602

100

134+259=

393

200

1,297

Place Value of the 7

Ones

200

253

Rounded to the nearest hundred

300

200

328+462=

790

300+400=700

20+60=80

8+2=10


200

348+251=

599

348+200=548

548+50=598

598+1=599

200

138+204=

342

200

328+216=

544

300

1,407 

Place Value of the 1

thousands

300

734

Rounded to the nearest 10

730

300

135+254=

389

100+200=300

30+50=80

5+4=9

300

310+238=

548

238+300=538

538+10=548

300

275+382=

657

300

459+386=

845

400

568

Place value of the 5 

hundreds

400

389 

Rounded to the nearest ten

390

400

430+263=

693

400+200=600

30+60=90

0+3=3

400

409+215=

624

215+400=615

615+9=624

400

789+368=

1,157

500

682

Rounded to the nearest hundred

700