Round and then Subtract
986-664; tens
330
885-474=
411
4,453-2,474=
1,979
A number close to the exact number __________.
estimate
Jeff played basketball for 70 minutes on Sunday. He played for 35 minutes on Monday. How much longer did Jeff play basketball on Sunday than on Monday?
35
550-244; tens
310
716-207=
509
9,871-1,214=
8,657
To rename a number using place value is to _________.
regroup
The cookie shop sold 26 monster cookies, 68 chocolate chip cookies, and 37 peanut butter cookies this week. How many more chocolate chip cookies did they sell than peanut butter cookies?
31
937-338; hundreds
600
550-240=
310
9,560-7,920=
1,640
The operation that tells the difference is called _______.
subtraction
Kayla pays $145 a month for riding lessons. She also plays $134 a month for swimming lessons. How much more does it cost for riding lessons than swimming lessons?
$11
1,836-1,648; hundreds
200
700-605=
95
3,070-2,021=
1,049
The answer to a subtraction problem is the _______.
difference
In August, Haley saved $78. In October, she saved $13. How much more money did she save in August than in October?
$65
7,621-2,000; hundreds
5,600
600-246=
354
8,007-4,836=
3,171
Two operations that can undo each other, such as addition and subtraction are called _______.
inverse operations
Lily was outside for 45 minutes on Tuesday, 36 minutes on Wednesday, and 26 minutes on Thursday. How many more minutes did Lily play outside on Tuesday than on Thursday?
19