Concepts
How would you draw 3x4 as an equal group?
Three groups of four / Four groups of three
What is the zero property?
The product of any number and zero, is zero.
5x0=0
What is the distributive property?
Multiplying a number by a group of numbers added together, which is the same as doing the multiplication with each number and then adding the products.
7x(3+5) = (7x3) + (7x5)
What are multiples of 10?
Numbers that have groups of ten, the product of any natural number multiplied by 10.
To add the same number to itself several times; it is an operation of repeated addition.
What is an array?
Items (objects or numbers) that are arranged in rows and columns.
What is the identity property?
When you multiply a number by 1, the product is that number.
1x8=8
Why do we use the distributive property?
To make multiplication easier.
What are some examples of multiples of 10?
10,20,30,...150,160,...350,360,370,...
What are the numbers that are multiplied in a multiplication problem called?
Factors
How would you draw 7x4 as an array?
seven rows of four columns / Four rows of seven columns
How would 9x7 look with your hands?
6 fingers, seventh finger down, three fingers
6/3
What does it mean to decompose?
To split up or divide a number into smaller parts.
How would you break up 3x700?
3x7x100
The result, or answer, when multiplying.
What is repeated addition?
Adding equal groups together, also known as multiplication.
You have three seconds!
What is 6x7?
42
How would you decompose 8?
8 and 0
1 and 7
2 and 6
3 and 5
4 and 4
How would you solve 3x40?
3x40
=3x4x10
=12x10
=120
What is a digit?
A single symbol used to make numerals: 0,1,2,3,4,5,6,7,8,9
What is the commutative property?
Shows that changing the order of the numbers when multiplying does not change the answer.
You have three seconds!
What is 9x9?
81
Answer: distributive property form
7x8
7x8
=7x(5+3) 7x(4+4) 7x(1+7) 7x(2+6)
=(7x5)+(7x3) (7x4)+(7x4) (7x1)+(7x7) (7x2)+(7x6)
=35+21 28+28 7+49 14+42
=56
Solve:
6x30 4x90 7x200
180 360 1400
What are the symbols used to group numbers or operations together in an expression called?
Parentheses