Subtract the ones, then subtract the tens. Write the total.
68 - 45 =
88 - 54 =
78 - 36 =
87 - 15 =
Estimate First! About how much?
77 - 42
Round to tens: 70 - 40 = 30
About:
Actual:
89 - 38
Round to tens: 80 - 30 = 50
About:
Actual:
88 - 25
Round to tens: 80 - 20 = 60
About:
Actual:
Show your work: subtract ones, subtract tens, combine.
59 - 35
Ones: 9 - 5 =
Tens: 5 - 3 = 0
Total:
99 - 56
Ones: 9 - 6 =
Tens: 9 - 5 = 0
Total:
Use ANY strategy you prefer. Try a different one for each problem.
77 - 42 =
Strategy I used:
89 - 38 =
Strategy I used:
88 - 16 =
Strategy I used:
69 - 24 =
Strategy I used:
Read carefully. Think about what is happening in the situation.
Mike had 57 toy cars. He gave 34 to his brother. How many toy cars does Mike have left?
Draw or write your thinking:
Answer: cars
A store had 77 red balls. They sold 32 to customers. How many red balls are left in the store?
Draw or write your thinking:
Answer: balls