Addition
432 + 267= ?
699
342-131
211
True or False:
226 rounded to the nearest ten is 220
False
There are 240 connecting cubes in the box. Five students each take 9 connecting cubes from the box.
Write an equation representing the situation, with "c" for the unknown"
240- 5x9 = c
460 + 249?
709
668 − 247
421
True or False:
749 rounded to the nearest hundred is 800.
False
There are 240 connecting cubes in the box. Five students each take 9 connecting cubes from the box.
How many cubes are left in the box?
195 cubes
186 + 345= ?
531
441 − 128
313
What is 45 rounded to the nearest hundred?
0
There are 88 colored pencils in a bag. Five students each take 6 pencils from the bag.
The number of pencils left in the bag is 𝑝.
Which equation represents the situation?
p= 88- 5 x 6
537 + 299=
836
437 − 199
238
What is 226 rounded to the nearest hundred?
200
There are 88 colored pencils in a bag. Five students each take 6 pencils from the bag.
How many pencils are left in the bag?
Solve the problem!
58 pencils.
389+ 515=
904
1,600 − 935
665
What is 1,252 rounded to the nearest hundred?
1,300
There are seats for 600 students in the auditorium. There are 287 students from Clare's school and 129 students from Noah's school at the performance.
Noah estimates that there will be about 100 empty seats. Do you agree with Noah? Explain or show your reasoning.
287 students is close to 300 students, and 129 is close to 100, so that would be 400 students.
600-400 would be about 200, so I don't agree with Noah.
OR
287 is close to 290, and 129 is close to 130
290 + 130= 420. 600-420 would be 180.