Review Unidad 7

Robert has 27 toy robots. He buys some more. Now he has 58 robots. How many robots did Robert buy?

• 
• 10+10+1=21

• 10+10+10+10+1=41

Sally has 28 fewer blocks than Nigel. Sally has 26 blocks. How many blocks does Nigel have? What information is given? What number do you need to find?

• 
• 28-26=2

• 26+28+2=56

Julie has 18 more pictures than Landon has. Julie has 37 pictures. How many pictures does Landon have? What missing number do you need to find in this problem? what information do you already have?

• 
• 37+19=56

• 37+18=55

Bob picked 18 flowers and then 5 more. How many flowers does he have? He gave 10 flowers to Buzz.

How many flowers are left?

• 18-5=13.

  13+10=23

• 
• 18+10=? --- +10= ----

  38

Mia sees 15 yellow birds and 16 red birds. Some birds fly away

and now Mia sees 14 birds. How many birds flew away?

• 
• 31+14= 45

• 15+16+17+=48

Is this equation true or false?

• 
• False

Find the unknown or missing number to make the equation true.

• 23

• 32

• 24

Write a number story for 68-33, then write an equation to match your story. Harry finds 68 acorns. He gives 33 of them to Joyce. How many acorns does Harry have left?

• 34

• 35

• 53

• 71

• 17

• 27

• 18

• 81

• 26