The 3rd graders sat in rows of 7 to watch a science movie. There were 4 rows of girls and 6
rows of boys. How many 3rd graders watched
the science movie?

70

Step-by-step explanation:

i think

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70

Step-by-step explanation:

There are 10 rows of 7 3rd graders in each row

First you multiply the rows of girls by 7

4 x 7 is 28

Then you multiply the rows of boys by 7

6 x 7 = 42

You then add 28 and 42 which gives you 70

Therefore there are 70 3rd graders watching the science movie