Rounding
Round 347 to the nearest ten.
350
What is the value of the 7 in 7,426?
7 THOUSANDS
438 + 275
713
764 − 238
526
Estimate:
638 + 271
900
Round 682 to the nearest hundred.
700
Write 6,305 in expanded form.
6,000 + 300 + 5
526 + 387
913
903 − 457
446
Estimate:
742 − 318
400
Which number rounds to 450 when rounded to the nearest ten?
A. 443
B. 446
C. 454
D. 461
C. 454
Write this number in standard form:
4,000 + 800 + 20 + 9
4,829
1,246 + 2,387
3,633
1,542 − 786
756
A library has 427 books on one shelf and 286 books on another shelf. Students check out 398 books.
How many books are left?
315 BOOKS
Round 3,649 to the nearest hundred.
3,600
Write nine thousand, two hundred sixteen in standard form.
9,216
3,458 + 2,679
6,137
2,735 − 948
1,787
A student is adding:
326 + 204
They change 204 to 200.
They say: “326 + 200 = 526, so my answer is 526.”
Are they correct?
NO
A student says:
“5,851 rounded to the nearest hundred is 5,900.”
Is the student correct? Explain why.
Yes.
The tens digit is 5, so we round the hundreds digit up.
What is the value of the 8 in 8,743?
8,000
ERROR DETECTIVE! 🚨
A student solved:
2,486 + 1,759 = 4,135
Is the student correct?
No.
Correct answer: 4,245
Bonus: Explain where the student's mistake may have happened.
Which equation is true?
A. 1,000 − 425 = 675
B. 1,000 − 425 = 575
C. 1,000 − 425 = 625
D. 1,000 − 425 = 525
B: 575
A school collected 1,245 cans. They donated 687 cans and then collected 325 more cans.
How many cans do they have now?
883 CANS