Mental Math
2 tens + 5 tens=
7 tens
8 + 7=
15
25-10=
15
342
3 hundreds
4 tens
2 ones
Ten less than 38 is____
28
34 tens - 1 tens=
24 tens
20 + 4=
24
16-4=
12
695
6 hundreds
9 tens
5 ones
Ten more than 96 is _____
106
660 - 400=
260
13 + 6=
19
20-6=
14
7 hundreds
7 tens
4 ones
774
Ten less than 58 is _____
48
330 - 130=
200
7 + 9=
16
30-30=
0
9 tens
4 hundreds
2 ones
492
Ten more than 148 is ________
158
600 + 40 + 5=
645
10 + 12=
22
52-42=
10
5 ones
3 tens
8 hundreds
835
Ten less than 190 is _____
180