Mental Math
Addition
Subtraction
Place Value
100
10 more than 234
244
100
24+56
80
100
89-12
77
100
What is the number in tens column? 

789

8
200
10 more than 34
44
200
98+12
110
200
56-49
7
200
What is the value of the underlined number?


798

700
300
10 more than 110
120
300
67+113
180
300
567-998
431
300
What is 987 in expanded form?
900+80+7
400
100 more than 567
667
400
234+567
801
400
781-456
325
400
What is 234 in word form?
Two Hundred Thirty-Four
500
100 less than 987
887
500
134+987
1,121
500
908-589
319
500
What is this number in standard form?


200+50+8

258
M
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