Question

what number can i combine with 0.30 to make 1 whole? first, complete the sentence. i can think about 0.30 as 30 cents. complete the equation. 0.30 + ? = 1.00 (options: 0.50, 0.60, 0.70, 0.80)

Explanation:

Step1: Define the equation

Let the unknown number be \( x \). The equation is \( 0.30 + x = 1.00 \).

Step2: Solve for \( x \)

Subtract \( 0.30 \) from both sides: \( x = 1.00 - 0.30 \).
Calculate the right - hand side: \( 1.00-0.30 = 0.70 \). We can also verify by adding \( 0.30+0.70 = 1.00 \), which satisfies the equation.

Answer:

0.70