FOURTH GRADE / MATHEMATICS / SUBTRACTION of NATURAL NUMBERS 1.3
MATHEMATICS IS EASY. PROVIDED THAT ONE WORKS ENOUGH .
ENOUGH IS SKILL DEPENDENT, HAVE TO FIND "ENOUGH" FOR YOUR SIZE.
If the given condition were A - BB = 11, the highest B could be 99 and the corresponding A would be 110.
The minimal BB is 11 .
If the condition were A - BB = 22 A would have 8 choices.
10 x 2.5 = 25 .
Do the operations from left to right and top to bottom ! The blue question marks should first be avoided.
A very easy question even if the subject is not known. Two numbers will take part in a binary operation. The choices are self answering.
568 - 221 = ? .
The minuend should be half the sum .
Sum of subtr. and diff. gives ... .
X is the minuend of a subtraction ... .
A is the sum of the other two given ...
Leap years are the years having Feb. 29.
Operations along the rows and columns will determine A and B.
Impala may well be still.
ry1 is certainly of some help. Take care that the beginner loses first and it loses one ball at each third round.
5232 - 1084 = ...
The number after excahange will be lesser .
90087 - 77851 = ... and ...
The number mentioned is 91198 .
X = 121 .
1322/2 = 661 ...
A + A = 784
Do sum first all numbers with "4" signs and then sum the with "-" signs and take the difference.
Note : - 27 + 127 = 100
please have a look at the ry1, numbers are forced to be equal.
Each natural grater than 7 satisfies.
lesser than 7 and greater than 0 .
Tens of the subtrahend must be a 2. ("http://www.grundschulstoff.de/arbeitsblatt/Mathematik-Grundrechenarten-Subtraktion-schriftlich-
This is the feedback!