3 Digit Addition

Expanded Form

100

Break apart numbers to add 234+644

200+30+4

600+40+4

200

Break apart numbers to add

398+786

300+90+8
700+80+6

300

Which of these is the correct way to find the sum of 654+204

a) 600+50+4

     200+0+4

     800+80+4

= 884

b) 600+50+4

    200+10+4

    =854

c)600+40+5

   200+0+4

=  800+40+5

a)600+50+4

   200+0+4

 800+80+4

884 

400

Which of these is the correct way to find the sum of 766+233?

a) 700+60+6

    200+30+3

    900 +90+9

b) 700+6+6

    200+3+3

     900+9+9

a)700+60+6

   200+30+3

=900+90+9

500

Using expanded form solve 

3435+78=

300+400+30+5

              +70+8

300+500+10+3

Hundreds, Tens, Ones

100

The sum of the equation can be written in tens and ones. Make the equation true.

45+50=

a) 9 tens +0 ones

b) 90 tens +10 ones

c)1 ten +5 ones

a) 9 tens +0 ones

200

The sum of the equation can be written using tens and ones.  Complete the equation

34+46=_____

a)70 tens +0 ones

b)70 tens+10 tens

c) 7 tens +0 ones

c) 7 tens +0 ones

300

The sum of the equation can be written using hundreds, tens and ones.

345+500

a) 8 hundreds +40 tens+5 ones

b) 8 hundreds+ 4 tens+ 5 ones

c)8 hundreds +40 tens+ 0 ones

b) 8 hundreds +4 tens +5 ones

400

The sum of the equation can be written in hundreds, tens and ones. Fill in the blanks to make the equation true

823+145=

 ___hundreds+___ tens + ___ones

9 hundreds + 6 tens + 8 ones

500

The sum of the equation can be written using thousands, hundreds, tens and ones. Make the equation true

1234+354=

____ thousands +___ hundreds+____ tens+ ____ ones

1 thousand +5 hundreds+ 8 tens+8 ones

Standard Form

100

233+554

787

200

345+455=

799

300

Find the sum

  344

+465

______

809

400

Find the sum

  1345

+  399

______

1744

500

Find the sum of 2331+94

2425

Number Stories

100

The farm has 55 goats and 39 pigs. How many animals are at the farm?

55+39=94

94 animals

200

28 kids buy lunch at school. 15 kids buy pizza for lunch. How many kids did not buy pizza for lunch?

28-15=

13 kids

300

There are 45 dogs at the park morning. 15 dogs leave the park in the afternoon. 5 dogs come back to the park in the evening. How many dogs are at the park in the evening?

45-15=30

30+5=

35 dogs

400

An orchard sells 65 red apples. It sells 50 more yellows apples than red apples. How many red and yellow apples did the orchard sell?

65+50=115

115+65

180 apples

500

There are 145 kids at a baseball game.  There are 200 more adults than kids at the baseball game. How many kids and adults are at the baseball game? 

145+200=345

345+145=490

490 adults and kids