Key Words
What word is the answer to an addition problem?
Sum
A store sold 127 apples on Monday and 93 apples on Tuesday. How many apples did the store sell in total?
220
What is 5 rounded to the nearest 10's place?
10
What is the best estimate of 9+8
20
What are words or phrases in a word problem that will let you know that you need to subtract?
How many more
Difference
How much more
Maria had $200. She spent $67 on clothes. How much money does Maria have left?
$133
What is 43 rounded to the nearest 10s place?
40
What is the best estimate of 7 X 5?
40
When you see this word, that means that your answer will be the closest to a specific number, but not exact.
Estimate
If one ticket to a movie costs $9 and 6 friends each buy a ticket, how much do they spend in total?
$54
If you round 15,678 to the nearest thousand, what is the answer?
a.
What is the best estimate for 398 + 205?
600
The answer to a multiplication problem
Product
At a soccer camp, there are 12 teams. Each team has 11 players. How many players are at the camp?
132 players
When rounding 8,149 to the nearest hundred, what do you get?
8,100
What is the best strategy to estimate 3,210−1,998?
a.
The answer to a division problem
quotient
A baker made 156 cupcakes in the morning and gave 49 of them away to a nearby school. How many cupcakes does the baker have left?
107
Round 7,856 to the nearest 10s place
7,860
You want to estimate the cost of 5 pizzas at $8.75 each. What is a reasonable estimate?
$45