Estimating
What is the symbol for estimating?
~
Write the symbols for greater than and less than.
>, <
Name the 2 methods we learned for solving multi digit multiplication.
Box Method
Rainbow Method
The acronym or 'word' that we use to help us solve Order of operations.
PEMDAS
Please excuse my dear aunt sally
Unmarked array
A word in a math problem that would mean to estimate.
About
Close to
Almost
True or False: The greater than symbol (>) always opens to the bigger number.
True.
52 x 83
Break each number into their tens and ones.
50 & 2
80 & 3
The step that comes before solving multiplication and division in order of operations.
Exponents.
Name of an array WITH LINES
What is the definition of estimating?
Making a quick, smart guess of a total amount.
Which symbol shows that two numbers are the same.
Solve.
30 x 40
1,200
The direction that you solve when multiplying and dividing, or adding and subtracting in order of operations.
Left to right
True or false: Columns in arrays go up and down, not side to side.
True
This is a compatible number for the number 16 in this expression.
16 x 20
20
Write the correct symbol.
21 ___ 18
>
Solve.
26 x 17
442
(9 x 3) + 15 - 4 + 2
40
An array has 4 columns and 7 rows. How many tiles does it have?
28
Estimate 42 x 59
About 2,400
Write the correct symbol.
8 x 5 _____ 9 x 6
<
Solve.
213 x 45
9,585
[5 x 3 + (7 x 5)] - 4 + 6
52
Ms. Schuler made an array with 32 tiles. There are 4 rows. How many columns did she make in her array?
8