Lesson 9 Math Review

How many tens are in the tens place in 469?

• 4 tens or 40

• 6 tens or 60

• 9 tens or 90

• none

How many hundreds are in the hundreds place in 469?

• 4 hundreds or 400

• 6 hundreds or 600

• 9 hundreds or 900

• none

 $25+25=$  

So, if 20+20=40 and 5+5=10 how much is 25+25?

• 50

• 60

• 45

• 40

 $30+25=$  

• 55

• 54

• 05

• 50

 $35+20=$  

So, if 30+20=50 and 5+0=5, how much is 35+20?

• 55

• 54

• 50

• 56

 $54+10=$  

• 64

• 45

• 54

• 65

 $430+120=$  

So, if 400+100=500 and 30+20=50, how much is 430+120?

• 550

• 450

• 500

• 530

 $150+60=$  

So, if 100+0=100 and 50+60=110, how much is 150+60?

• 210

• 200

• 300

• 190

 $100-20=$  

• 80

• 70

• 40

• 60

 $100-30=$  

• 70

• 40

• 50

• 20