Stage 4 Algebra Worksheet With Answers
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104/2 Round to nearest 10, 100, 1000,
Stage 4
PROMPT sheet
Example 1– Round 4279 to the nearest
1000
Step 1 – Find the ‘round-off digit’ -
4
o
Step 2 – Look one digit to the right of
4
-
2
o
4/1 Count in multiples
5 or more? NO – leave ‘round off digit’ unchanged
Now you must learn these multiples
- Replace following digits with zeros
Multiples
Multiples
Multiples
Multiples
ANSWER – 4000
of 6
of 7
of 9
of 25
6
7
9
25
Example 2– Round
4279
to the nearest
10
Step 1 – Find the ‘round-off digit’ -
7
o
12
14
18
50
Step 2 – Look one digit to the right of
7
-
9
o
18
21
27
75
24
28
36
100
5 or more? YES – Add one to the ‘round off digit’
- Replace following digits with zeros
30
35
45
125
36
42
54
150
ANSWER – 4280
42
49
63
175
4/3 Negative numbers
48
56
72
200
54
63
81
225
Negative numbers are numbers BELOW ZERO
60
70
90
250
Think of a number line
4/2 Find 1000 more or less
Horizontal number line
4
5
6
7
Vertical number line
To increase or decrease by 1000 this is the digit
that changes.
Positive numbers
4567 has increased
4567 has decreased
by 1000 to 5567
by 1000 to 3567
Negative numbers
3
5
6
7
5
5
6
7
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