Rounding
Round 66 to the nearest ten
70
Round 366 to the nearest hundred
400
236+462=
698
72-15
57
"How many total" is a key phrase for what kind of equation?
a. addition
b. subtraction
c. multiplication
d. division
a. addition
Round 118 to the nearest ten
120
Round 118 to the nearest hundred
100
57+39=
96
624-616=
8
"how many more" is a key word for what kind of story problem?
a. addition
b. subtraction
c. multiplication
d. division
b. subtraction
Round 525 to the nearest ten
530
Round 525 to the nearest hundred
500
236+499
735
182-117=
65
This month the fourth and fifth graders at Rosa Parks School had a contest to see who could read the most books. By the end of the month, the fourth graders read 637 books and the fifth graders read 674 books. Which equation does NOT represent this problem?
a. 674-637=b
b. 637+674=b
c. 674-b=637
d. 637=b=674
b. 637+674=b
Round 2,861 to the nearest ten
2,860
Which two numbers can you add to get closest to 700?
560, 400, 270, 442
442, 270
673+249=______+250
672
True or False?
123-109=122-110
False
This month the fourth and fifth graders at Rosa Parks School had a contest to see who could read the most books. By the end of the month, the fourth graders read 637 books and the fifth graders read 674 books. How many more books did the winners read than the losers? Show your work.
674-637=37 books
Round 2,861 to the nearest hundred
Which two numbers can you add to get closest to 1,000?
560, 400, 270, 442
560, 442
True or false?
329+113=330+112
True!
843-129=_____-130
584
The fourth grade had 363 students. Over winter break, 94 students moved away, but 26 new students moved in.
How many students are now in fourth grade? show your work!
363-94=269
269+26=295
295 students