Hong Kong
Stage 1 - Stage 3
Rules for Describing Sequences
Interactive practice questions
Use the rule to complete the table of values:
"The starting number is doubled, then $4$4 is subtracted."
a
| Starting Number ($N$N) | $12$12 | $13$13 | $14$14 | $15$15 |
| Answer ($A$A) | $\editable{}$ | $\editable{}$ | $\editable{}$ | $\editable{}$ |
b
Which of these equations describes the rule above?
$A=2\times\left(N-4\right)$A=2×(N−4)
A
$A=N\times2-4$A=N×2−4
B
$A=N^2-4$A=N2−4
C
$A=2+N-4$A=2+N−4
D
Easy
1min
Use the rule to complete the table of values:
"The starting number has $9$9 added to it. The sum is then multiplied by $5$5."
Easy
1min
Given the following pattern used in constructing matchstick figures:
Easy
1min
Matches were used to make the pattern below:
Easy
2min
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