Place Value
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Addition, Subtraction, and Their Applications
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Percentage
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Factors & Prime Numbers
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Average
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Speed Mass and Capacity
SPEED DISTANCE AND TIME:
Light travels at 3, 00,000 km per second and sound travels at
343 m per second.
Speed is calculated by dividing the distance travelled by the
time it takes to travel that distance.
MEASUREMENT OF MASS:
1 Kg = 1000 g
These units are related to each other using the place value
system.
Thousands Hundreds Tens Ones Tenths Hundredths Thousandths
Kilogram (kg), hectogram ,Decagram, Gram (g)
decigram ,centigram, Milligram (mg)
We multiply to change from a bigger unit to smaller one
(BSM rule).
We divide to change from a smaller unit to bigger one
(SBD rule)
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