Multiplication
12×11=
132
Is 7 prime or composite?
Prime (factors: 1,71,7).
What is 312÷3?
104
Maria has 13 boxes of pencils. Each box has 12 pencils. How many pencils does she have in all?
13×12=156
Maria has 156 pencils.
Lily buys 3 packs of markers. Each pack has 12 markers. She gives 5 markers to her friend. How many markers does Lily have left?
3×12=36 and 36−5=31
Lily will have 31 markers left.
23×12=
276
Is 9 prime or composite?
Composite (factors: 1,3,91,3,9).
What is 455÷5?
91
A baker made 24 muffins and packed them equally into 6 boxes. How many muffins are in each box?
24÷6=4
There are 4 muffins in each box.
A school orders 15 boxes of crayons. Each box contains 24 crayons. They divide the crayons equally among 12 classrooms. How many crayons does each classroom get?
Total crayons: 15×24=360
per classroom: 360÷12=30
Each classroom gets 30 crayons.
34×15=
Is 13 prime or composite?
Prime (factors: 1,131,13)
What is 768÷6?
128
A classroom has 28 students. The teacher arranges them into groups of 4 for an activity. How many groups can she make?
28÷4=7
They can make 7 groups.
A farmer harvests 46 crates of apples with 14 apples in each crate. He sells the apples in bags of 8. How many full bags can he make?
Total apples: 46×14=644
Full bags: 644÷8=80 (since 8×80=640).
They can make 80 full bags.
46×21=
966
Is 10 prime or composite?
Composite (factors: 1,2,5,101,2,5,10)
What is 999÷9?
111
A factory packs 48 gadgets in a carton. If they make 15 cartons, how many gadgets did they make?
48×15=720
They can make 720 gadgets.
A toy company produces 72 toy cars per hour. They work 9 hours a day for 6 days. They pack the cars into boxes of 12. How many full boxes do they fill?
Total cars: 72×9= 648, then 648×6= 3,888
boxes filled: 3888÷12=324
They can fill 324 boxes of cars.
58×37=
2,146
Is 15 prime or composite?
Composite (factors: 1,3,5,151,3,5,15)
What is 624÷8?
78
A store receives 864 stickers. They put them into packs of 8 to sell. How many packs can they make?
864÷8=108
They can make 108 packs.
A bookstore has 528 books. They arrange the books on 6 shelves equally. Then they place the books from one shelf into gift bundles of 8 books each and give away 3 bundles. How many books remain on that one shelf after giving away the bundles?
Books per shelf: 528÷6= 88
Gift Bundles: 88÷8= 11
Bundles left: 11-3=8
Total books left: 8 x 8= 64
There are 64 books left on that one shelf.