Question

There are 476 nuts and 218 bolts in a toolbox. How many objects are there in the toolbox?

Answer 1

We add 476 and 218 by expansion method.
$\bullet$ We expand 476 and 218 as follows:
$476=400+70+6$
$218=200+10+8$


$\bullet$ For ones place, we add 6 and 8 to give 14 or 14 ones.
$6+8=14$
14 ones can be regrouped as 1 tens (10) and 4 ones (4).
$\bullet$ For tens place, we add 10, 70, and 10.
$10+70+10=90$
$\bullet$ For hundreds place, we add 400 and 200.
$400+200=600$
$\bullet$ Hence, we get $476+218=694$.
$\bullet$ There are a total of 694 tools in the toolbox.
Option B is the correct answer.