Subtraction
75,632-6,799
68,633
23,754+74,899
98,653
Mr. Bob paid $345,999 for his home and $23,156 for his car. Mrs. Smith paid $456,234 for her home and car combined. How much more did Mrs. Smith pay than Mr. Bob?
Mrs. Smith paid $87,079 more than Mr. Bob.
If you're estimate for a problem is 3,000 and then you use the actual numbers to solve the equation and you find 3,198 is the true answer would you say that your answers were reasonable?
Explain
Example:
Yes because the estimate and the true answer are close to each other.
83,274-9,123
74,151
56,934+278+62,698
119,910
The aquarium keeps track of how many visitors it has each month. Estimate the total number of visitors for the aquarium. Round each number to the nearest hundred. Show your work.
Month | Visitors |
January | 1,567 |
February | 943 |
March | 2,356 |
April | 1,894 |
Jan-1,600
Feb-900
March-2,400
April-1,900
Total #: 6,800 visitors
Mrs. Mac had 536,721 cookies. She sold 4,832 cookies in a week and then she gave away 865 cookies.
About how many cookies are left? Estimate by rounding each number to the nearest thousand. Show your work.
536,721--537,000
4,832--5,000
865--1,000
537,000-5,000-1,000=531,000 cookies
About 531,000 cookies are left.
123,478-67,342
56,136
532+67,821+439,932
508,285
Find the exact amount of visitors for the aquarium using the chart below. Show your work and write in a complete sentence.
Month | Visitors |
January | 1,567 |
February | 956 |
March | 2,356 |
April | 1,894 |
6,773 visitors in all visited the aquarium from January to April.
Mrs. Mac had 536,721 cookies. She sold 4,832 cookies in a week and then she gave away 865 cookies.
Use the standard subtraction algorithm to find the exact number of cookies Mrs. Mac has left. Show your work and write a complete sentence.
536,721-4,832-865=531,024
Mrs. Mac has 531,024 cookies left.
589,398-93,654
495,744
40,855+693+722,195
763,743
Suzie bought a boat and a trip to Mexico for $99,321. Billy bought a boat for $23,345 and a trip to Mexico for $47,821.
Who spent more money?
How much more money did that person spend than their friend?
Show your work and write a complete sentence.
Billy spent $71,166 for both things and Suzie spent $99,321. So Suzie spent more money than Billy.
Suzie spent $28,155 more than Billy spent.
Carlos bought a closet full of shoes for $4,567 and a new car $45,932. Renee bought a closet full of shoes and a brand new car for $50,092.
Who spent more money?
How much more money did that person spend than their friend?
Show your work.
Renee spent $50,092 and Carlos spent a total of $50,499. So Carlos spent more money than Renee.
Carlos spent $400 more than Renee.