A class of 28 boys and 24 girls must be divided into small groups for an activity. If the teacher wants equal numbers of boys and girls in each group, at most how many groups she can form?
4
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15
List some multiples of 4
4,8,12.16....
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10
list all factors of 12
1,12,2,6,3,4
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15
Which number has only 3 factors?
9 or 25 or ...
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20
The temperature at 2 AM is -10 degrees. By 9 AM the temperature has increased by 15 degrees. Work out the temperature at 9 AM.
5 degrees
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thief
Give points!
5
10
15
20
25
magnet
Take 15 points!
Okay!
gift
Win 25 points!
Okay!
lifesaver
Give 25 points!
Oops!
baam
Lose 20 points!
Oops!
shark
Other team loses 10 points!
Okay!
rocket
Go to first place!
Okay!
banana
Go to last place!
Oops!
15
Find common factor(s) of 3 and 4
1
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5
increase by ...
tฤng lรชn bแปi ...
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15
Find LCM of 34 and 16
272
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15
25 has ... factors
3
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20
On Wednesday the temperature at midday is -10C. By 7 pm the temperature has dropped by 40C. Work out the temperature at 7 pm.
-50oC
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25
A shop keeper bought a box of pen. There were less than 60 pens in the box. The pens can be packed into bags of 4 and 7 and has no left over. What is the biggest possible number of pens in the box?