FOURTH GRADE / MATHEMATICS / SUBTRACTION of NATURAL NUMBERS 1.2
MATHEMATICS IS EASY. PROVIDED THAT ONE WORKS ENOUGH .
ENOUGH IS SKILL DEPENDENT, HAVE TO FIND "ENOUGH" FOR YOUR SIZE.
The sum of all elementes is twicw the ninuend implies that minuend is ....
To know this fact proven in our previous test may let you spare precious time !
A. and S. being inverse operations, 73+54 = ... .
If both diff. and subtr. increases by 50, the minuend should increase by ... .
M-S = D and M-D = S are the same equations .
M+S+D = M + M = 2xM .
150 added to minuend means difference increases by 150.
100 subtracted from subtr. means diff. increases bu 100.
If both done together ...
The absolute difference is "1".
Subtract the lesser from the greater and write the result with a minus sign.
For practical operation, add both numbers a "1".
If 15 is subtracted from minuend the difference decraeses by 15.
Addition of 5 to subtrahend means an additional ... by 5.
Increasing the minuend by 20 means the difference will then be 95 but an increase of the subtr. by 30 would bring this down to ... .
The figure is not scaled but dimensions are given.
1 mm. 1000 mikrometredir.
Burj Dubai's height in micrometers is ... .
1 m. 1 million micrometer.
The operation is trivial, the question aims that you make comparisons of small/thin objects .
Be careful about the units. Every physical quantity must have a unit.
They both are shifted in the same direction .
The wires will get longer in summer and shorter in winter. This total change may be, for 40 degrees change in T., 250 m. wire-length, about
Take care, the final length is not being questioned.
There can not be an 11th customer of this type !
Remember our addition tests, the sum of then numbers from 1 to n is equal to n(n+1)/2. For n=10 this gives 5x11
The details of optics can be neglected for the time being.
The date of erection of the obelisk should be 1400 B.C.
Have a look at ry1. Semih, i.e. John, has always the first decrease.
please have a lokk at the ry1 of the previous Q.
If minuend is decreased by 15, the diff. decreases to 12 ... .
Note that diff. + subtr. should be the minuend .
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