2-min Fluency Warm-up — Solve in your head.
6 + 8 =
14 − 9 =
7 + 9 =
16 − 7 =
Estimate First! Round to the nearest ten and estimate BEFORE you solve.
48 + 34
Estimate: + =
Exact answer:
Was your estimate close?
72 − 29
Estimate: − =
Exact answer:
Was your estimate close?
Solve. Watch out — some need regrouping and some do not!
Show two different ways to solve 46 + 39.
Ideas: column addition, make a friendly number (39 + 1 = 40), break apart tens and ones, number line.
Way 1:
Way 2:
Answer:
Read carefully. Think about what is happening in the situation.
A bakery made 92 muffins. They sold 58 in the morning. Then they baked 25 more. How many muffins do they have now?
My thinking:
muffins
Kim has 35 stickers. Her goal is 70. Jo says she needs 45 more. Is Jo right? Prove it.
My thinking:
Jo is: right / wrong — she needs