Say What?
Mental Math
50 + 50 + 10
110
Mental Math
60- 10 =
50
MENTAL MATH
98 + 499 =
597
How many tens
784
8
Mental Math
100 + 900 =
1000
Mental Math
Jack had a lemonade stand and made $25, the first day and $30 the next day. how much money did he make?
$55
345 + 134 =
479
6
5 + 5 + 5 +5
20
562-100
462
MENTAL MATH
155 + 245 = ?
400
How many 1's: 703
3
Mental Math
865 + 10
875
649-349
349
MENTAL MATH
10 + ___ = 241
231
How many 1000's: 3,057