Added Rounding
Round each number to the nearest 100 then solve. You must show your work.
234 + 234
200+200= 400
573+703
1276
Round to the nearest 100 and solve actual.
294-139=
300-100=200
155
584-327
257
Write 456 as a addend.
400+50+6
Round to the nearest 100 to estimate and then find the actual answer.
455+291
500+300= 800
746
234+643
877
Round to the nearest 10 and solve estimate.
934-485=
930-490=440
736-123
613
Write 345 + 498 as an addend.
300+40+5
400+90+8
Round each number to the nearest 10 then solve. You must show your work.
234 + 641
230+640= 870
639+174=
813
The Kitty Cat pet shop made a profit of $946 on Monday.
The shop made a profit of $678 on Tuesday.
Round to the nearest 10 to find how much more profit the shop made on Monday? Then solve actual actual answer.
950-680= $270
$268
Roberto has 273 prize tickets. He trades 169 of the tickets for a flying disk and 20 tickets for a drink.
How many prize tickets does Roberto have left?
84 Tickets
How do you know your estimate and actual answer are correct?
Your estimate should be close to your actual answer.
A tree farm has 274 maple trees, 310 oak trees, and 46 pine trees. How many trees in all?
630 trees.
Mr. Carson's class raised $283 during the fall fundraiser.
The class raised $349 during the spring fundraiser.
How much did Mr. Carson's class raise altogether?
$632
Round to the nearest 100 and solve for actual answer.
873-278=
900-300=600
595
401-259=
142
A chess match begins at 1:00 in the afternoon The first 134 people arrive at 12:30. At 12:40, another 215 people arrive.
At 12:50, 47 people arrive. How many people will watch the chess match?
396 people
Reggie makes jewelry out of shells.
He collects 417 small shells, 281 medium-sized shells, and 327 large shells. How many shells did he have in all?
Round to the nearest 10 to estimate and then find the actual answer.
420+280+330= 1030
1025 Shells.
601-456=
145
The drama club has 500 tickets to sell for the new play. So far the club has sold 386 tickets.
There will be 3 performances of the play.
How many tickets does the club have left to sell?
114 tickets.
700-298
402
Use the inverse operation to check if this problem is correct.
723-693= 170
The answer is not correct. the correct answer is 30.