Question

1. mathematical practice 4 model math luisa has 183 pennies. her dad gives her 128 more. write a number sentence to show how many pennies luisa has now.
2. jonah has read 265 pages. he has 147 more to read. how many pages will he read in all?

vocabulary check
choose the correct word to complete each sentence.
reasonable regroup sum

1. ________ means to rename a number using place value.
2. the answer to an addition sentence is called the ______.
3. estimate the exact answer before solving the problem to see if your answer is ________.

Explanation:

Question 4

Step1: Identify initial and added quantity

Luisa initially has 183 pennies, and her dad gives her 128 more. To find the total, we use addition.

Step2: Write the number sentence

The number sentence is $183 + 128$. To find the total, we calculate $183+128 = 311$. But the question asks for the number sentence, so the number sentence is $183 + 128 = 311$.

Step1: Identify the two parts of pages

Jonah has read 265 pages and has 147 more to read. To find the total number of pages he will read, we add these two quantities.

Step2: Perform the addition

The total number of pages is $265+147$. Calculating this, $265 + 147=412$.

The word "regroup" in mathematics means to rename a number using place - value. For example, when we have 10 ones, we can regroup them as 1 ten. The other words: "reasonable" is about whether an answer makes sense, and "sum" is the result of addition. So the word that means to rename a number using place value is "regroup".

Answer:

$183 + 128 = 311$

Question 5