Strategies
What strategy can I use that involves a body part?
Fingers
7+9=
16
18+16=
34
10-4=
6
What number has no tens, and 4 ones?
4
Are fingers always the best strategy?
No, they aren't great for adding larger numbers
7+8=
27+66=
93
13-3=
10
What number has 1 ten and 4 ones?
14
What is a strategy I know that does NOT use a body part?
Touch Points
52+32=
84
645+287=
932
56-4=
52
What number has 3 hundreds, 5 tens, and 3 ones?
353
Do Touch Points have to be in the right spot?
No, as long as the number gets the right number of touch points, it doesn't matter what it looks like.
345+423=
768
652+178=
830
34-12=
22
What number has 5 hundreds, zero tens, and 3 ones?
503
Which number gets touch points, the one on top or the one on bottom?
Bottom
561+437=
998
967+345=
1312
345-123=
222
What number has zero hundreds, 3 tens, and zero ones?
30