Review!

Math Terms

100

What does sum mean?

Sum means the result of an addition problem. 

200

What does the "difference" mean in math? 

Difference means the result of a subtraction problem 

300

What does regroup mean?

Regrouping means to rearrange a number/combining values to make tens, hundreds, etc. (Like turning 12 ones into 1 ten and 2 ones) 

400

What does ungroup mean?

Ungroup means taking a larger place value (like a ten) and breaking it down into smaller units (like ten ones) in a subtraction problem 

500

What does place value mean?

The value of a digit based on where it is in the number. ( The value of hundreds, tens, ones in a number for example) 

Number Line +/-

100

205+110=

315

200

432+111=

543

300

348+414=

762

400

514-235=

279

500

567-391

176

Base Ten Blocks +/-

100

139+350=

489

200

333+351

684

300

467+323=

790

400

571-282=

289

500

455+465=

920

Expanded Form +

100

   247

+ 341

__________________________________

500+80+8=588

200

   260

+ 539

__________________________________

700+70+12 or 700+ 80+ 2=782

300

  510

+ 134

__________________________________

600+40+4=644

400

   260

+ 178

__________________________________

300+130+8 or 400+30+8

438

500

    537

+  457

__________________________________

900+80+14 or 900+90+4=994