Question

7×10+2+3×10-¹+4×10-²=???

Answer 1

Пошаговое объяснение:

7×10+2+3×10^(-1)+4×10^(-2)=

=70+2+3×1/10+4×1/10^2=

=70+2+0,3+4/100=70+2+0,3+0,04=

=72,34

Answer 2

=70+2+30+4*100=72+30+400=502

Answer 3

To calculate this expression, you should follow the order of operations (PEMDAS/BODMAS), which stands for Parentheses/Brackets, Exponents/Orders (i.e., powers and square roots, etc.), Multiplication and Division (left-to-right), and Addition and Subtraction (left-to-right). In this case, you perform multiplication and division from left to right and then addition.

Let's break down the expression:

7 × 10 + 2 + 3 × 10^(-1) + 4 × 10^(-2)

1. Calculate the multiplications and divisions from left to right:
   • 7 × 10 = 70
   • 3 × 10^(-1) = 3 × 0.1 = 0.3
   • 4 × 10^(-2) = 4 × 0.01 = 0.04

Now, the expression becomes:

70 + 2 + 0.3 + 0.04

2. Add the results together:

70 + 2 + 0.3 + 0.04 = 72.34

So, 7 × 10 + 2 + 3 × 10^(-1) + 4 × 10^(-2) equals 72.34.