Question

plzz help Add 4.2+(-0.4)
plot the first addend and then the sum on the number line

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Answer 1

Answer:

put a dot on the knot after the 4 that represents 4.2 then place the dot at the knot right before 4 that represents the 3.8. each knot is moving up or down by 2.

Step-by-step explanation:

hopes this helps also branly please

Answer 2

We must create a number line and draw an arrow for each term of the sum.

The procedure is now described:

1) Create a number line with big marks for each unit and small marks for each tenth.

2) Draw an arrow from 0 to 4.2. (Blue arrow in the figure)

3) Create an arrow from 4.2 to 3.8. (Green arrow in the figure)

$x = 4.2 + (-0.4)$

$x = 3.8$

A step-by-step representation of the number line is presented in the figure attached below.

We kindly invite to check this question on number lines: https://brainly.com/question/1889174