Addition
34 + 66 =
What is 100
78 - 34 =
What is 29 rounded to the nearest 10?
What is 30
Estimate: 63 - 38 =
Estimate: 67 + 45 =
What is 120
258 + 542 =
What is 800
657 - 433 =
What is 224
What is 568 rounded to the nearest 100?
What is 600
Estimate: 654 − 278 =
What is 370 or 400
Estimate: 529 + 374 =
What is 900
237 + 568 =
What is 805
832 - 369 =
What is 463
What is 343 rounded to the nearest 10?
What is 340
Estimate: 803 − 392 =
What is 410 or 400
Estimate: 643 + 376 =
What is 1,000 or 1,020
Lena has 47 stickers in her collection. Her friend gives her 36 more stickers for her birthday.
How many stickers does Lena have now in total?
What is 83 stickers
Jason had 62 marbles in his collection. He gave 25 marbles to his friend.
How many marbles does Jason have left?
What is 37 marbles
What is 555 rounded to the nearest 100?
A library had 734 books on its shelves. Over the summer, 289 books were borrowed by students.
About how many books are left in the library?
What is about 440 or 400 books
A bakery sold 372 muffins on Monday and 489 muffins on Tuesday.
About how many muffins did the bakery sell in total on these two days?
What is about 860 or 900 muffins
Maya read 55 pages of a book on Monday and 31 pages on Tuesday. On Wednesday, she read 23 more pages.
How many pages did Maya read in total over the three days?
What is 109 pages
Ms. Enderle had 246 pencils. She gave 89 pencils to her students in the morning and 54 more pencils in the afternoon.
How many pencils does Ms. Enderle have left now?
What is 927 rounded to the nearest 10?
What is 930
A school had 856 pencils at the beginning of the month. In the first week, students used 273 pencils. In the second week, they used 198 more pencils.
About how many pencils does the school have left now?
What is about 390 or 400 pencils left
A bookstore sold 428 books in January. In February, they sold 376 books. In March, they sold 295 books.
About how many books did the bookstore sell in these three months?
What is about 1,110 or 1,100 books