Embed Size (px)
Citation preview
Number and Operation3rd Grade MCA Math
Vocabulary
• Exactly the same amount or value
J. Scheumann & C. Sorenson 2011
equal
digits
J. Scheumann & C. Sorenson 2011
value
• How much a number is worth.
J. Scheumann & C. Sorenson 2011
compare
J. Scheumann & C. Sorenson 2011
It is good to know if one number is bigger, smaller or the same as another number!
BIG > smallsmall < BIG
Click here to compare fractionsClick here to compare lengthsClick here to compare numbers 0-1Click here to compare numbers -1 to +1Click here to compare numbers -10 to 10Click here to compare numbers 0 to 10Click here to compare numbers 0 to 100
• To put numbers in order
– least to greatest lowest to highest
– greatest to least highest to lowest
J. Scheumann & C. Sorenson 2011
Example: 100, 45, 22, 18, 2These numbers are in descending order.
Click here to try it!
order
fewer
• There are fewer ____ than _____.
J. Scheumann & C. Sorenson 2011
more
J. Scheumann & C. Sorenson 2011
less
J. Scheumann & C. Sorenson 2011
least
J. Scheumann & C. Sorenson 2011
greater
• Bigger than
J. Scheumann & C. Sorenson 2011
greatest
• The biggest or largest
J. Scheumann & C. Sorenson 2011
greatest
• biggest
J. Scheumann & C. Sorenson 2011
The greatest number of birthdays of students is in May
nearest
J. Scheumann & C. Sorenson 2011
What number is nearest to 1.10?
closest
J. Scheumann & C. Sorenson 2011
What number is closest to 1.8?
vocabulary reviewUse the words less, more, least, greatest, most, fewer, greatest, and greater to talk about how much a coin is worth and it’s value.
PennyNickelDime
Quarter
A __________ is worth the _____________
I have (more/fewer/greater) _______ than _______.
plot
• To draw on a graph or map.
J. Scheumann & C. Sorenson 2011
locate
• Find, tell where something is.
J. Scheumann & C. Sorenson 2011
Locate Minnesota on the map.
point
J. Scheumann & C. Sorenson 2011
add
• bringing two or more numbers (or things) together to make a new total.
J. Scheumann & C. Sorenson 2011
Click here to try it!
sum
• The result of adding two or more numbers.
J. Scheumann & C. Sorenson 2011
Adding negative numbers
subtract
J. Scheumann & C. Sorenson 2011
• taking one number away from another.
difference
• The result of subtracting one number from another. How much one number differs from another.
J. Scheumann & C. Sorenson 2011
multiply
J. Scheumann & C. Sorenson 2011
product
• The answer when two or more numbers are multiplied together
J. Scheumann & C. Sorenson 2011
divide
• To divide is to split into equal parts or groups. It is "fair sharing".
J. Scheumann & C. Sorenson 2011
Example: there are 12 chocolates, and 3 friends want to share them, how do they divide the chocolates?
Answer: They should get 4 each.
We use the ÷ symbol, or sometimes the / symbol to mean divide:
12 / 3 = 412 ÷ 3 = 4
result
• The results are what you find out in a survey or the answer to a problem.
J. Scheumann & C. Sorenson 2011
Competitive = Trying to wear better clothes than someone else
estimate
• A close guess of the actual value, usually with some thought or calculation involved.
J. Scheumann & C. Sorenson 2011
Example: Alex estimated there were 10,000 sunflowers in the field by counting rows
round
• To make into a whole number
J. Scheumann & C. Sorenson 2011
http://www.mathsisfun.com/rounding-numbers.html
fraction
• A fraction is a part of a whole
J. Scheumann & C. Sorenson 2011
Click here to try it!
Slice a pizza, and you will have fractions:
