Estimating
$2.99 + $3.99 roughly equals ____ ?
$6
22
+ 35
_____
57
4 - 7 = ?
-3
2/7 + 3/7 = ?
5/7
196 + 203 + 401 roughly equals ___ ?
800
99
- 47
_____
52
What is the difference between integers and whole numbers?
Integers include negative numbers, whole numbers don't.
1/4 + 1/2 = ?
3/4
Why is estimating useful?
Useful for adding/subtracting things quickly when you don't have a calculator. (Eg. Adding items at a grocery store.)
654
+456
_____
1110
6 + (-13) = ?
-7
6/10 - 1/5 = ?
Don't forget to reduce your answer!
2/5
Lebron James averaged 29.843 points per game. Pascal Siakam averaged 20.395 points per game. Roughly how many more points per game did Lebron score than Spicy P?
10 more points per game
3798
+8542
______
12340
-21 + 44 = ?
+23
3/5 + 9/15 = ?
Mixed fraction accepted only!
1 1/15
$1.99 + $2.49 + $4.99 + $7.49 is roughly ____ ?
$17
92415
- 87398
_______
5017
-12 - (-37) = ?
+25
7/8 - 2/3 = ?
5/24