Place Value and Rounding
If the number in the ones place is four or less, we round ___________.
down
321 + 543 =
864
956 - 642 =
314
On Thursday, Phil read 359 pages of a book. On Friday, he read 286. How many pages did Phil read over the two days?
645 pages
even + even = _________
even
If the number is five or more, we round ___________.
up
876 + 423 =
1,299
672 - 244 =
428
Shauna is reading a book with 653 pages. She has already read 399 pages. How many pages are left to read?
254 pages
odd + odd = ________
even
What is 13 rounded to the nearest ten?
10
152 + 709 =
861
917 - 526 =
391
Kate uses partial sums to add. Look at her work to determine what her original numbers were.
500 + 300
70 + 10
4+3
800 + 80 + 7 = 887
574 and 313
even + odd = _________
odd
What is 574 rounded to the nearest hundred?
600
539 + 684 =
1,223
504 - 389 =
115
Amelia planted 117 flowers. Jenna planted 239 flowers, and Leanna planted 345 flowers. How many flowers did the three girls plant all together?
701 flowers
A polygon must have straight sides, be a closed figure, and have lines that do not _______
cross
Tina says that 394 rounded to the nearest hundred is 390. What is her mistake?
394 rounded to the nearest ten is 390
394 rounded to the nearest hundred is 400
999 + 876 =
1,875
1,000 - 825 =
175
Joshua bought 450 pieces of candy. He gave away 304 pieces to trick or treaters. Then his neighbor gave him 126 more pieces. How many pieces of candy does he have now?
272 pieces of candy
What is the name of a four-sided shape with four equal sides and no right angles?
rhombus