Addition/ Even or Odd
3
ODD
SUBTRACT:
435 - 312 =
123
Round to the nearest 10:
56
60
ESTIMATE (Round, then find the sum)
42 + 32 =
40 + 30 = 70
On Friday 376 people attended the school concert, On Saturday, 427 people attended. How many people attended the concert all together?
803
IS THIS NUMBER EVEN OR ODD?
16
even
SUBTRACT
890 - 765 =
125
Round to the nearest 10:
14
10
ESTIMATE (Round, then find the sum)
13 + 17 =
10 + 20 = 30
There are 46 books on Ms. Logan's book shelf. Mrs. Mena has 74 books on her book shelf. ABOUT HOW MANY MORE books does Mrs. Mena have then Ms. Logan?
About 20 more books
Find the Sum
629 + 222 =
851
SUBTRACT
918 - 427 =
491
Round to the nearest 100:
202
200
ESTIMATE (Round, then find the sum)
99 + 12 =
100 + 10 = 110
STudents want to sell 400 tickets to the school talent show. They have sold 214 tickets. How many more tickets do they need to sell to reach their goal?
186
Find the sum:
459 + 213 =
672
900 - 201
699
Round to the nearest 100:
943
900
ESTIMATE (Round, then find the difference)
590 - 289 =
600 - 300 = 300
There are 262 students in the 2nd grade and 298 students in the 3rd grade. if 227 students take the bus to school, how many students DO NOT take the bus?
333 students do not take the bus
Find the sum:
901 + 109 =
1,010
105 - 67 =
38
Round to the nearest 100:
567
600
ESTIMATE (Round, then find the difference)
72 - 22 =
70 - 20 = 50
There are 431 crayons in a box and 204 crayons on the floor. How many fewer than 1,000 crayons are there total?
365 crayons less than 1000