Revision for Math Primary Checkpoint
Numbers and the Number System
 Multiplying and Dividng by 10, 100 and 1000
__________________________________________________________
1. Complete the calculations.
Calculation
Exact Answer
Rounded to the
nearest tenth
Rounded to the
nearest whole
number
471 ÷ 100 =
2.56 × 10 =
2. Fill in the gaps.
× 10
Answer
7.2
× 100
6.15
163
3.8
12.5
÷ 10
Answer
277
Answer
12.1
÷ 100
Answer
146
1.48
7.6
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3. Write the missing numbers in these calculation.
a. 630 ×
= 6300
c.
× 100 = 2100
b. 230 ÷
= 23
d.
÷ 10 = 45
4. Write the missing number in each chain.
…………… ÷ 10
(a) 4.5 ÷ 10
(b) 4567 ÷ 100
…………… × 10
(c) 3125 ÷ 100
.………….....
…………….. × 100
……………….
…………….
the value of 5 is …………..
5. Write the missing number.
b.
5300
a.
÷ 100
÷1000
÷ 10
6. Here are four numbers.
40 004
400 400
400 004
400 040
Put a ring round the number that is one hundred times bigger than four
thousand and four.
7. Here are four numbers.
60014
6001.4
600.14
60.014
Put a ring around the number that is one hundred times bigger than 6.001
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