Alice buys 7 boxes of pens. Each box has 12 pens. She multiplies 7 by 10 and 7 by 2 then adds them. How many pens are there?
7 x 12 = 7 x (10 + 2) = 70 + 14 = 84. *** Answer: 84 pens.
Tom has 4 bags with 9 candies in each. Tony has 9 bags with 4 candies in each. Show that they have the same total.
Tom: 4 x 9 = 36. Tony: 9 x 4 = 36. 4 x 9 = 9 x 4. *** Answer: 36 candies.
Mr Lam has 5 boxes. Each box has 2 bags. Each bag has 11 cookies. Multiply 5 and 2 first to find the total.
(5 x 2) x 11 = 10 x 11 = 110. *** Answer: 110 cookies.
Goon and Sam buy 6 packs of stickers. Each pack has 11 stickers. They multiply 6 by 10 and 6 by 1 then add them.
6 x 11 = 6 x (10 + 1) = 60 + 6 = 66. *** Answer: 66 stickers.
Cindy arranges 8 rows of chairs with 7 chairs in each. Andy arranges 7 rows with 8 chairs in each. Are they equal?
Cindy: 8 x 7 = 56. Andy: 7 x 8 = 56. 8 x 7 = 7 x 8. *** Answer: 56 chairs.
Cherry has 2 trays. Each tray has 5 plates. Each plate has 12 grapes. Multiply 2 and 5 first to find the total.
(2 x 5) x 12 = 10 x 12 = 120. *** Answer: 120 grapes.
Mr Tung has 9 boxes of chalk. Each box has 12 pieces. He multiplies 9 by 10 and 9 by 2 then adds them.
9 x 12 = 9 x (10 + 2) = 90 + 18 = 108. *** Answer: 108 pieces.
Suri has 12 boxes with 3 dolls in each. Alice has 3 boxes with 12 dolls in each. Do they have the same amount?
Suri: 12 x 3 = 36. Alice: 3 x 12 = 36. 12 x 3 = 3 x 12. *** Answer: 36 dolls.
Tom, Tony and Goon have 4 boxes. Each box has 5 tins. Each tin has 7 coins. Multiply 4 and 5 first.
(4 x 5) x 7 = 20 x 7 = 140. *** Answer: 140 coins.
Sam prepares 8 gift bags. Each bag has 9 chocolates. She breaks 9 into 5 plus 4 to calculate.
8 x 9 = 8 x (5 + 4) = 40 + 32 = 72. *** Answer: 72 chocolates.
Cindy has 6 baskets with 12 eggs in each. Andy has 12 baskets with 6 eggs in each. Compare the totals.
Cindy: 6 x 12 = 72. Andy: 12 x 6 = 72. 6 x 12 = 12 x 6. *** Answer: 72 eggs.
Cherry and Mr Lam have 2 trucks. Each truck has 5 crates. Each crate has 11 melons. Multiply 2 and 5 first.
(2 x 5) x 11 = 10 x 11 = 110. *** Answer: 110 melons.
Suri buys 12 packs of juice. Each pack costs 5 dollars. She multiplies 10 by 5 and 2 by 5 then adds them.
12 x 5 = (10 + 2) x 5 = 50 + 10 = 60. *** Answer: 60 dollars.
Mr Tung has 11 rows of desks with 4 desks in each. Goon has 4 rows with 11 desks in each. Are they the same?
Tung: 11 x 4 = 44. Goon: 4 x 11 = 44. 11 x 4 = 4 x 11. *** Answer: 44 desks.
Alice and Sam have 5 jars. Each jar has 2 packets. Each packet has 9 seeds. Multiply 5 and 2 first.
(5 x 2) x 9 = 10 x 9 = 90. *** Answer: 90 seeds.
Tony has 7 boxes of pizza. Each box has 11 slices. He multiplies 7 by 10 and 7 by 1 then adds them.
7 x 11 = 7 x (10 + 1) = 70 + 7 = 77. *** Answer: 77 slices.
