Question

equation by filling in the missing number.
9.) 0.9 + ______ = 2.6
10.) 6.7 + ______ = 8.1
11.) 4.5 + ______ = 7.8

1. ______ + 2.4 = 5.1

13.) 3.6 + ______ = 6.0
14.) ______ + 3.5 = 7.0
15.) 5.25 + ______ = 9.0
16.) ______ + 4.8 = 8.3

Explanation:

Problem 9:

Step1: Let the missing number be \( x \). The equation is \( 0.9 + x = 2.6 \). To find \( x \), we subtract \( 0.9 \) from both sides.

\( x = 2.6 - 0.9 \)

Step2: Calculate the subtraction.

\( 2.6 - 0.9 = 1.7 \)

Step1: Let the missing number be \( x \). The equation is \( 6.7 + x = 8.1 \). Subtract \( 6.7 \) from both sides.

\( x = 8.1 - 6.7 \)

Step2: Perform the subtraction.

\( 8.1 - 6.7 = 1.4 \)

Step1: Let the missing number be \( x \). The equation is \( 4.5 + x = 7.8 \). Subtract \( 4.5 \) from both sides.

\( x = 7.8 - 4.5 \)

Step2: Do the subtraction.

\( 7.8 - 4.5 = 3.3 \)

Answer:

\( 1.7 \)

Problem 10: