Fact or Fib Showdown! Unit 3 - Multiplication

Fact or Fib #1 The product of 5 x 400 = 2,000.

Fact! The product of 5 x 400 = 2,000.

Fact or Fib #2 Brodie bought 21 packages of beads. Each package contains 12 beads. Brodie bought a total of 53 beads.

Fib! Brodie bought a total of 252 beads.

Fact or Fib #3 The price of a ticket for the haunted hayride in Corpus Christi is $17. Summer purchased tickets for herself and 14 of her friends to attend. The following strip diagram represents the total cost for the group, g, to attend.

Fact! Summer + 14 of her friends is 15 total people attending. The strip diagram shows 15 groups of 17. The equation would be: g = 15 x 17

Fact or Fib #4 At the start of a chess game, there are 32 chess pieces on a board. Kiana’s chess tournament started with 9 chess games going at once. There were about 400 chess pieces on the board at the start of the tournament.

Fib! There were about 300 pieces at the start of the tournament. The number 32 would round to 30 and 9 would round to 10.

Fact or Fib #5 A box contained 84 trick-or-treat bags for 4 th graders. Mrs. Wiatrek wants to put 23 M&Ms in each bag. She could use the equation 84 x 23 to determine how many M&Ms she will need to fill the bags.

Fact! Mrs. Wiatrek needs a total and she is putting an equal number in each bag, so she would multiply 84 x 23 to get 1,932 total M&Ms.

Fact or Fib #6 The following is an example of the distributive property: 234 x 2 = 2 x 234

Fib! No, it is an example of the commutative property. 234 x 2 = 2 x 234

Fact or Fib #7 The following shows the first step when using the distributive property: 2 x 362= 2 x ( )

Fact! The first step is to DECOMPOSE! 2 x 362 = 2 x ( )

Fact or Fib #8 The following is a correct example of the standard algorithm for multiplication: 3 6 x 4 5 _________ _________ 3 2 4

Fib! The following is NOT a correct example of the standard algorithm for multiplication. What mistake was made? 3 6 x 4 5 _________ _________ 3 2 4

Fact or Fib #9 The following is an example of the associative property of multiplication: 6 x (8 x 2) = (6 x 8) x 2

Fact! The following is an example of the associative property of multiplication: 6 x (8 x 2) = (6 x 8) x 2 When 3 or more factors or multiplied, they can be grouped together in different ways and equal the same product.