Vocabulary
How much a digit is worth based on its place.
What is place value?
27 rounded to the nearest 10.
What is 30?
76+89=
What is 165?
88-29=
What is 59?
Ms. Bates baked 283 cookies on Friday. On Saturday she baked 187 cookies. How many more cookies did she bake on Friday than on Saturday?
What are 96 more cookies on Friday?
The answer in an addition problem.
What is the sum?
124 rounded to the nearest 10.
What is 120?
127+183=
What is 310?
189-178=
What is 11?
Najat says that 367 + 429 is about 1,000. Do you agree or disagree?
I disagree because the sum is closer to 800.
The answer in a subtraction problem.
What is the difference?
1,325 rounded to the nearest 10.
What is 1,330?
ESTIMATE the answer for 298+307
What is 600?
600-241=
What is 359?
Which two numbers have a sum closest to 1,000?
327 482 600 398
What are 600 and 398?
Making a number simpler but keeping its value close to what it was.
What is ROUNDING?
2,344 rounded to the nearest 100.
What is 2,300?
198 + 124 = 200 +____
What is 122?
625 - 48 = 630 -___
What is 53?
The fourth grade has 363 students. Over winter break, 94 students moved away, but 26 new students moved in. How many fourth graders are there now?
What are 295 fourth graders?
An approximate calculation found by rounding the numbers involved.
What is an ESTIMATE?
12,478 rounded to the nearest hundred.
What is 12,500?
327+_____= 329 + 18
What is 20?
___ - 270 = 727 - 268
What is 729?
Yusuf and Khadro collect cans to recycle. Yusuf has 275 cans and Khadro has 168 cans. On their way to the recycling center, their bag breaks and 89 cans fall out. How many cans do they have now?
What are 354 cans?