expanded form addition

How would I use expanded form to solve 326+123?

• 300+2+6

  +100+2+3

  =400+4+9=449

• 300+20+6

  +100+20+3

  =400+40+9=449

• 3+2+6

  +1+2+3

  =4+4+9=449

• 449

Tags

CCSS.2.NBT.B.7

How would you solve 401+411 with expanded form?

• 401

  +411

  =812

• 400+1

  +400+1+1

  =800+1+1=812

• 400+0+1

  +400+1+1

  =8+1+1=812

• 400+0+1

  +400+10+1

  =800+10+1=812

Tags

CCSS.4.NBT.B.4

300+60+8=

• 386
• 123
• 308
• 368

Tags

CCSS.2.NBT.A.3

 This problem is solved using expanded form. What is the next step to solve the equation?
  346 -> 300 + 40 + 6
+231 -> 200 + 30 + 1
__________________
            ___+____+____=

• 100 + 10 + 5= 105
• 500 + 70 + 7 = 577

Tags

CCSS.2.NBT.A.1

CCSS.2.NBT.A.3

CCSS.2.NBT.B.5

CCSS.2.NBT.B.7

345 + 129 =

• 464
• 458
• 563
• 474

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Round to the tens. 471

• 470
• 500
• 480
• 400

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Round to the tens. 35

• 30
• 40
• 45
• 43

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Round to the hundreds. 715

• 800
• 710
• 720
• 700

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

832 + 178 = 

• 900
• 1,000
• 1,010
• 910

Tags

CCSS.2.NBT.A.1

CCSS.2.NBT.B.7

76 - 28 = ________

• 47
• 104
• 48
• 50

Tags

CCSS.2.NBT.B.5