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< Grade 7 Math - Expressions, equations, and inequalities

Interpreting linear expressions

Next Problem

A water molecule is made of

1

oxygen atom and

2

hydrogen atoms. The mass of an oxygen atom is

O

, and the mass of a hydrogen atom is

H

Match the expressions to their meanings. Each meaning may match more than one expression.

	The mass of $1$ water molecule	The mass of $4$ water molecules	Neither of these
$O + H$
$2H + O$
$H + 2O$
$8H+4O$
$O+2H$
$4(2H + O)$

Interpreting linear expressions

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