Rounding
Area
Basic operations
Fractions Tuned to Decimals
Ratio
100
Round 8.7 to the nearest whole number
9
100
find the area 
672
100
Whats is 36 + 250
286
100
turn 1/4 into a decimal
0.25
100
Put 1/2 into a ratio
1 : 2
200
Round 6.8553 to the nearest whole number
6.86
200
find area
36cm
200
What is 889 + 281
1,170
200
turn 276/1000 into a decimal
0.276
200
Put 9/10 into a ratio
9 : 10