2-min Fluency Warm-up — Mental math. Go fast!
83 − 10 =
47 + 10 =
200 + 100 =
600 − 100 =
Estimate First! Round to tens, estimate the difference, then solve.
63 − 28
Estimate (60 − 30):
Actual:
91 − 45
Estimate (90 − 50):
Actual:
74 − 38
Estimate (70 − 40):
Actual:
82 − 19
Estimate (80 − 20):
Actual:
Use any strategy you prefer.
Review: Column subtraction with regrouping.
Read carefully. Show your work.
A garden had 68 flowers. After a big wind, 35 flowers fell over. How many flowers are still standing?
Draw or write your thinking:
flowers
Mom had 93 cookies in the jar. The family ate 47 cookies for snacks. How many cookies are left in the jar?
Draw or write your thinking:
cookies
Is each answer even or odd? Write it.
63 − 28 =
even or odd? ____
91 − 45 =
even or odd? ____
74 − 38 =
even or odd? ____
Self-Check: How do you feel about subtracting with regrouping?
Breaking a Ten (Visual)
😊 I got it! | 😐 Getting there | 😟 Need help
Column Subtraction (Borrow)
😊 I got it! | 😐 Getting there | 😟 Need help
Word Problems with Subtraction
😊 I got it! | 😐 Getting there | 😟 Need help
One thing I learned this week:
One thing I want to practice more:
My favorite strategy for subtracting: