Sara has 10 stickers. She buys 15 more, then gives away 5.
How many does she have now?
20
Ms. Pafumi sang 2 Taylor Swift songs that were each 5 minutes long. How long did Ms. Pafumi sing?
π What steps would you do to solve this problem?
5 minutes +5 minutes = 10 minutes
or
5 minutes X 2 songs = 10 minutes
Explain how you know 5 Γ 6 = 30 without multiplying.
Repeated addition, skip counting, or known facts
Solve: 36 + 27
π Show another way besides standard algorithm (stacking)
A teacher has 4 boxes of markers. Each box has 12 markers. She gives away 10.
How many are left?
38
Lena has 24 apples. She gives 8 away. How many apples does she have now?
π What operation should you use?
Subtraction
24-8=16
Explain two ways to solve 40 Γ· 5
Solve: 48 Γ· 4
π Solve using equal groups OR repeated subtraction
12
There are 8 tables with 6 students at each table. Then 7 students leave.
How many students remain?
41
A class collected 135 cans. They want to split them equally into 5 boxes.
π What is the question asking you to find?
How many cans go in each box
Division
Is 34 + 27 the same as 27 + 34? Why?
Yes, commutative property
A rectangle has 4 rows of 9 squares.
π Solve using multiplication AND repeated addition
36
A store sells 5 packs of pencils. Each pack has 9 pencils.
They sell 18 pencils. How many are left?
27
There are 6 rows of chairs with 12 chairs in each row. Some are empty.
π What information is missing?
How many chairs are empty / how many are filled
Explain how breaking apart numbers helps solve 56 + 38
Add tens and ones separately
Solve: 125 + 89
π Break each number into easier numbers before solving
125 + 89
120 + 80 = 200
5 + 9 = 14
200 + 14 = 214
A farmer has 6 fields. Each field has 24 plants. He removes 36 plants.
How many plants remain?
108
Tom has 3 times as many marbles as Jay. Jay has 7 marbles.
π What does β3 times as manyβ mean?
Multiply
7 Γ 3
Create your own word problem that equals 48 Γ· 6 and solve it
Answers
Solve: 240 Γ· 6
π Use a model (area model or grouping)
40
A school orders 7 boxes of pencils. Each box has 18 pencils.
They give 45 pencils to students and then divide the rest equally among 6 classrooms.
π How many pencils does each classroom get?
13 pencils
A store had 250 pencils. They sold some and now have 180 left.
π What is the question asking you to find?
How many pencils were sold
A student says:
β48 Γ· 6 is the same as 48 Γ· 3 Γ· 2, so the answer is 8.β
π Do you agree or disagree?
π Explain your thinking using numbers, words, or a model.
Agreeβthe statement is correct.
Explanation (what youβre looking for):
A farmer packs 96 apples into boxes. Each box holds 8 apples.
π Solve this using two different strategies.