Three Digit Addition Number Line

​ (a)   + ​ (b)   = ​ (c)  

• 500

• 400

• 900

• 450

• 550

• 850

Label the end of each jump.

a

b

100

125

200

225

Label the end of each jump.

b

d

75

125

100

175

There were 200 t-shirts in blue. 75 shirts in red. How many total t-shirts are there?

Mathematical Equivalence

ON

• 378

• 478

• 578

• 678

Which number sentence can help you solve the number line?

• 400 + 500 = 900

• 500 + 475 = 975

• 700 + 100 = 800

• 200 + 700 = 900

There were ​ (a)   rocks in a pail. ​ ​ (b)   rocks were added to the pail. How many were there in all? ​ (c)  

• 375

• 300

• 325

• 75

• 50

• 60

• 475

• 400

• 500

• 100

What is the answer in this addition problem?

• 543

• 143

• 387

• 156

What addition sentence is shown in the picture?

• 234+369=604

• 100+10+10+10+5=135

• 234+334+344+354+364=369

• 234+135=369

This picture shows 387 plus what?

• 543

• 143

• 13

• 156