Addition?
Mental Math
50 + 50 + 10
110
Mental Math
60 - 10 =
50
MENTAL MATH
100- 50
50
How many tens
784
8
MENTAL MATH
600-150=
450
3x 2
6
Mental Math
100 + 900 =
1000
Mental Math
9 - 15
-6
310 + 40
What is in the tens place?
650
50
Mental Math
3x3=
9
5x 5
25
5 + 5 + 5 +5
20
562-100
462
MENTAL MATH
155 + 245 = ?
400
What is in the thousands place?
45 000
5 or 5000
MENTAL MATH
15+15=
10x10
100
Mental Math
865 + 10
875
649-349
349
MENTAL MATH
10 + ___ = 241
231
What is in the ones place?
345
5
MENTAL MATH
12 + 12 + 12 + 12 +12
60
3x4
12
Mental Math
1048 + 200 =
1248
Mental Math
250-150
100
MENTAL MATH
37 + 63 =
100
What is in the 100s place?
5482
400
1023+200=
1223
9x9
81