Adding Mentally

Adding Mentally

Expand to add

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Expanding numbers

Recap on Expanding

Multiple Choice

add 325 and 244 mentally using the expanded form

• 300 + 200 = 500

  20 + 40 = 60

  5 + 4 = 9

  500 +60 +9 = 569

• 200 + 400 =600
  30 + 20 = 50
  5 + 4= 9
  600+ 50 +9 = 659
  

Multiple Choice

Use a pencil and a paper to expand and add mentally 329 + 140

• 569

• 367

• 469

Multiple Choice

Use a pencil and a paper to expand and add mentally

217 + 221

• 471

• 438

• 440

Multiple Choice

Use a pencil and a paper to expand and add mentally 711 + 365

• 1067

• 1076

• 976

Multiple Choice

Use a pencil and a paper to expand and add mentally

555 +218

• 773

• 763

• 800