Question

How can these models be used to find the sum 2.42 + 1.9?



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The models show a total of 3 wholes,
tenths, and
hundredths. After regrouping 10 tenths into 1 whole, there are
wholes,
tenths, and
hundredths. Therefore, the sum of the numbers is
. pls hurry 100 points

Answer 1

Answer:

• 4 wholes, 3 tenths and 2 hundredths

or

• 4.32

Step-by-step explanation:

According to the model we have:

• 2.42 = 2 wholes, 4 tenths and 2 hundredths
• 1.9 = 1 whole and 9 tenths

Sum up:

• 2 + 1 = 3 wholes
• 4 + 9 = 13 tenths = 1 whole and 3 tenths
• 2 hundredths

Regroup the wholes to get:

• 3 + 1 = 4 wholes, 3 tenths and 2 hundredths

In decimal form it is:

• 4.32