Addition
Add.
19 + 19 =
38
Subtract.
52 - 34 =
18
Round to the nearest 10.
78
80
Find the missing number.
? + 13 = 40
27 + 13 = 40
A bookstore had 1,836 books. The store sold 476 books. How many books are left?
There are 1,360 books left.
Add.
72 + 35 =
107
Subtract.
897 - 434 =
463
Round to the nearest 10.
246
250
Find the missing number in ? - 74 = 21
95 - 74 = 21
Ms. Jones spent $326 at the store, Mr. Parenteau spent $193, and Ms. Serrenho spent $462. How much did they spend all together?
They spent $981 all together.
Add.
831 + 58 =
889
Subtract.
409 - 127 =
282
Round to the nearest 100.
427
400
Write the three other number sentences to create a fact family.
6 + 12 = 18
12 + 6 = 18
18 - 12 = 6
18 - 6 = 12
Ms. Jones has 16 books. Ms. Hernandez has 8 books more than Ms. Samantha. How many books does Ms. Hernandez have?
Ms. Hernandez has 24 books.
Add.
627 + 294 =
921
Subtract.
400 - 263 =
137
Round to the nearest 100.
61
If you take away 30 from a number N you get 45.
Create a number sentence describing the above situation.
N – 30 = 45
Ms. Przybycien collected 60 pieces of candy on Halloween. She ate 24 pieces. How many pieces of candy does Ms. Przybycien have now?
Ms. Przybycien has 36 pieces of candy left.
Add.
624 + 18 + 5, 301 =
5, 943
Subtract.
7, 302 - 658 =
6,644
Estimate the sum by rounding each number to the nearest 100.
286 + 739 =
300 + 700 = 1,000
Write four related number sentences using the three numbers given.
56, 44, 100
44 + 56 = 100
56 + 44 = 100
100 - 56 = 44
100 - 44 = 56
10 aliens just showed up at Holyoke Community Charter School. There are now 30 aliens at the school. How many aliens were already here before this new spaceship arrived?
There were already 20 aliens at Holyoke Community Charter School.