Estimation
Estimate the sum of 8,240 and 3,890 by rounding each number to the nearest thousand.
What is 12,000
Round the population of a country 24,815,300 to the nearest ten million.
What is 20,000,000?
Find the sum of 42,315 + 35,262.
What is 77,577?
In the problem 500 - 185 = 315, the number 500 (the starting amount you subtract from) is known by this term.
What is an minuend?
Name the property shown in this equation: 24 + 0 = 24.
What is the Identity Property of Addition?
A stadium sold 48,720 tickets on Friday and 31,450 tickets on Saturday. About how many total tickets were sold if you round each number to the nearest ten-thousand?
What is 80,000 tickets?
A major movie earned $187,420,500 at the box office. Round this amount to the nearest hundred million.
What is $200,000,000?
Add 153,428 + 234,161.
What is 387,589?
In the subtraction problem 85 - 30 = 55, this vocabulary word describes the answer you get after subtracting.
What is the difference?
This property states that changing the order of the addends does not change the sum (for example: 15 + 8 = 8 + 15).
What is the Commutative Property of Addition?
A theme park welcomed 284,100 visitors in June and 419,800 visitors in July. Estimate the total number of visitors across both months by rounding to the nearest hundred-thousand.
What is 700,000 visitors?
Round 642,890,150 to the nearest ten million.
What is 640,000,000?
Solve 28,475 + 15,382.
What is 43,857?
When solving 62 - 28, you trade 1 ten for 10 ones to make 12 ones. Name this math process.
What is regrouping?
Fill in the missing number to satisfy the Associative Property: (12 + 19) + 8 = 12 + (_ + 8).
What is 19?
A city budget set aside $682,400 for parks and $228,900 for libraries. Estimate the total budget spent on both by rounding each amount to the nearest hundred-thousand.
What is $900,000?
A company budgeted $458,210,000. Round this budget to the nearest hundred million.
What is 500,000,000?
Find the sum of 364,829 + 258,416.
What is 623,245?
This vocabulary word is the total you get in the problem 768+259.
What is the sum?
Identify the property that allows you to regroup addends using parentheses without changing the sum, such as (40 + 50) + 10 = 40 + (50 + 10).
What is the Associative Property of Addition?
A company had 148,000 purchases in January and added 382,000 by April. About how many total purchases do they have now if you round to the nearest ten-thousand?
What is 530,000 purchases?
Round 895,340,120 to the nearest ten million.
A city’s north district collected 582,391 pounds of recycling and the south district collected 849,725 pounds. What is the exact total pounds collected?
What is 1,432,116?
In the equation 45 + 32 = 77, the numbers 45 and 32 are both called this term.
What is the addend?
A student solves 17 + 25 + 3 by first rearranging it to (17 + 3) + 25 to quickly get 20 + 25 = 45. Name BOTH addition properties the student used.
What are the Commutative Property and the Associative Property?