Vocabulary 1
a number close to the exact number
What is an estimate?
a symbol, usually a letter, that is used to represent an unknown quantity.
What is variable?
124+335=
What is 459?
1,234+3,423=
What is 4,657?
What is 1,000 more than 11,876.
What is 12,876?
these symbols show grouping (DO THIS FIRST!)
What is parentheses?
A number that is subtracted from another number?
What is subtrahend?
473+244=
What is 717?
4,876+2,324=
What is 7,200?
The number that is 100 less than 9,641.
What is 9,541?
this property states that the sum of any number and zero is the number
What is the identity property (of addition)?
the first number in a subtraction sentence from which a second number is to be subtracted?
What is minuend?
Estimate. 889 + 124 =
What is 900 + 100 =1,000?
What is 57,505?
Estimate. Round each addend to the indicated place value. $188 + $327; tens
What is ($190+$330) $520?
this property states that the order in which numbers are added does not change the sum
What is the commutative property (of addition)?
(23 + 5) + 20 = 23 + (5 + 20)
What is the associative property of addition?
Omar has 654 pieces of Halloween candy and Olivia has 299 piece of candy. If they put their candy together, how much do they have? Write an addition sentence with an unknown and solve.
What is 654 + 299 = c, c = 953 pieces of candy?
Abigail has $3,612 in her purple piggy bank. George has saved $2,987. They put their money together to buy plane tickets to Ireland. The total cost for tickets is $6,500. Do they have enough? Write an addition sentence with an unknown. Make an estimate (by rounding to the nearest 100). Then solve.
What is yes? They have about $6,600 or exactly $6,599.
Estimate. Round each addend to the indicated place value. $2,198 + $7,147; hundreds
What is ($2,200+$7,100) $9,300?
this property states that the way addends are grouped does not change the sum
What is the associative property (of addition)?
(6 + 2) + 5 = (5 + 2) + 6
What are the commutative and associative properties of addition?
Spencer covered 182 miles trick-or-treating and Amiee covered 199 miles. It's reasonable that they covered a total of 400 miles on October 31. (True or false, defend with evidence)
What is TRUE? 182 is about 200, 199 is about 200. 200 + 200=400
The sum of 58,978 and 62,344.
What is 121,322?
Estimate. Round each addend to its greatest place value. 42,585 + 25,277=
What is (40,000 + 30,000) 70,000?