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Check the answers in the tables below

Step-by-step explanation:

First I will explain the steps done in each column

Column 1: Multiply 2 numbers

Column 2: Split the terms inside the bracket in such a way that adding or subtracting those numbers we get the same number.

Column 3: Using distributive property a(b+c) = (ab)+(ac)

Column 4: Solving the expression by adding or subtracting  the terms

1)

Given: Data in Column 2 100(0.04+0.06)

Column 1     Column 2               Column 3                  Column 4         Value

100(0.1)       100(0.04+0.06)     100.0.04+100.0.06          4+6                   10

2)

Given: Data in column 3

Column 1     Column 2               Column 3             Column 4         Value

                                                     4+2               8                    

3)

Given: Data in Column 4 9+12

Column 1     Column 2               Column 3                  Column 4         Value

3(7)                    3(3+4)                    3(3)+3(4)                   9+12                  21

4)

Given: Data in Column 4 24-16

Column 1     Column 2               Column 3                  Column 4         Value

4(2)                  4(6-4)                      4.6-4.4                      24-16                8

answer: the answer is 40.82

step-by-step explanation: 3.14 x 13(or half of 26) to the power of 2