Question

add. show how you know.1. 135 + 59 = 2. 28 + 146 =

Explanation:

Step1: Solve 135 + 59 (vertical add)

$$\begin{align*} &\phantom{+}135\\ &+\phantom{1}59\\ \hline &\phantom{+}194 \end{align*}$$

Step2: Break 59 for number line

$135 + 50 = 185$, then $185 + 9 = 194$

Step3: Solve 28 + 146 (vertical add)

$$\begin{align*} &\phantom{+}146\\ &+\phantom{1}28\\ \hline &\phantom{+}174 \end{align*}$$

Step4: Break 28 for number line

$146 + 20 = 166$, then $166 + 8 = 174$

Answer:

1. $135 + 59 = 194$

Number line: $135
ightarrow 185
ightarrow 194$

1. $28 + 146 = 174$

Number line: $146
ightarrow 166
ightarrow 174$