Show:
Mental
Addition
Subtraction
Surprise!
100
440+330=
770
100
227+183=
410
100
120-50=
70
200
360+440=
800
200
424+288=
712
200
210-35=
175
200
Finish this pattern 95, 105, 115, ___,___,___
125 135 145
300
440+380=
820
300
638+298=
936
300
333-76
257
300
How much money is a dime, a nickel, 2 quarters, and 8 pennies?
73 cents
400
490+ 470=
960
400
648+ 289=
937
400
761-472
289
400
What fraction of the students here today are girls?
2/10
500
363+445
808
500
556+444=
1,000
500
905-319=
586
500
What time is it right now?
Look at the clock!