Equations
How does knowing 2x9 help you find 4x9? Explain.
You can double the product of 2x9 to get 4x9. 18 doubled is 36
Hiro is going to buy some diving equipment. Mouth pieces are $5. He plans to buy 3 mouth pieces and then buy a mask for $24. How much would be spend?
3x5+24=39
A missing number, or the number to be solved for, is called the ______
unknown
6x8=___
6x80=____
48
480
What is a correct way to decompose
60 × 5?
10x6x5
Denise is organizing her colored pencils for art class. She has 5 packs of pencils with 8 pencils in each pack. She puts colored pencils in groups of 4 pencils. How many groups of pencils can Denise make?
10 groups
A _____ is a number that is multiplied by another number.
9x3=__ 9x30=__
27
270
Complete the equation.
2 × 5 × 7 = b
__Blank 1_× 7 = b
_Blank 2__ = b
Blank 1- 10
Blank 2- 70
Jenna counts 7 cars in the parking lot, and each car has 4 tires. She multiplies 7 × 4 to find the total number of tires in the parking lot. Which is another way she could have found the total number of tires? (think of the properties)
4x7
A ______ is the product of that number and any whole number.
multiple
7x4=___ 7x40=___
28
280
Complete the equation
10x4x2=a
___ x 8=a
___=a
10
80
Amanda buys 24 apples. She divides them equally among 6 bags. She gives away 2 bags of apples. How man apples does she give away?
8 apples
The _______ is the answer to a multiplication equation
product
An even number x an odd number = a ____ number
even number
Are these equations the same? 10x7x9=a 63x10=b
Yes, 7x9=63 so they are the same equation
Shaina is shopping for school clothes. She wants to buy 5 t-shirts for $6 each and a pair of shoes for $20. She thinks that she will spend about $30. Is this answer reasonable? Explain.
No, it is not reasonable because 5x6-30 and 30+20=50.
A _____ is an arrangement or sequence of numbers according to a rule or structure.
pattern
An odd number x an odd number = a/an _____ number
odd number