# Finding the unknown (4 operations) II

## Interactive practice questions

We want to work out the value of $d$d that makes the following equation true:

$8+2\times d=16$8+2×d=16

a

First let's complete a simpler expression. Fill in the blank in the equation below.

$8+\editable{}=16$8+=16

b

So $2\times d=8$2×d=8. What number times $2$2 equals $8$8?

Easy
Less than a minute

We want to work out the value of $d$d that makes the following equation true:

$8+5\times d=28$8+5×d=28

We want to work out the value of $n$n that makes the following equation true:

$26=6+10\times n$26=6+10×n

Let's work out what $b$b must equal to make the following equation true.

$4\times6=b+20$4×6=b+20

### Outcomes

#### NA3-8

Connect members of sequential patterns with their ordinal position and use tables, graphs, and diagrams to find relationships between successive elements of number and spatial patterns.