P4 MATHS

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SAPMATP4_W47Page 1/5

Taken from Learning Maths Book 4B

Look at the figures below.

1. DrawFigureXintheboxbasedonthegivenhints.

• Ithasfourequalsides. • Ithastwopairsofparallellines. • Ithasfourrightangles.

2. DrawFigureZintheboxbasedonthegivenhints.

• Ithasfoursides. • Ithastwopairsofparallellines. • Ithasequaloppositesides.

Revision: Perpendicular and Parallel Lines

P4 MATHS

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SAPMATP4_W47Page 2/5

Taken from Learning Maths Book 4B

3. Findtheunknownsides.

5cm

12cmx

y

x= cm

y= cm

4. Ifthelengthofthefigurebelowisfivetimesitsbreadth,findtheunknownsides.

40cm

y

x

x= cm

y= cm

5. Findtheunknownsides.

10cm

y

x x= cm

y= cm

Solutions:1.2. 3. x = 12 y = 5

4. x = 40 ÷ 5 = 8 y = 40

5. x = 10 y = 10

Revision: Perpendicular and Parallel Lines

P4 MATHS

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SAPMATP4_W47Page 3/5

Taken from Learning Maths Book 4B

Revision: Decimals (Part 1)

Express each decimal in tenths.

1. 0.9= tenths

2. 3.6= tenths

3. 78.4= tenths

4. 18.3= tenths

5. 21.5= tenths

9___ 10 =9

Solutions:

3. 784

78.4 = 78   4  ___ 10   = 78 ones

    4 tenths = 784 tenths

4. 183

18.3 = 18   3  ___ 10   = 18 ones

    3 tenths = 183 tenths

5. 215

215 = 21  5  ___ 10   = 21 ones

    5 tenths = 215 tenths

2. 36

3.6 = 3   6  ___ 10   = 3 ones

    6 tenths = 36 tenth

P4 MATHS

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SAPMATP4_W47Page 4/5

Taken from Learning Maths Book 4B

Revision: Decimals (Part 1)

Express each decimal in hundredths.

1. 5.43= hundredths

2. 81.95= hundredths

3. 60.72= hundredths

4. 38.54= hundredths

5. 90.45= hundredths

543 5.43=5 43____100

=5ones43hundreds

=543hundreds

Solutions:

3. 6072

60.72 = 60   72  ____ 100   = 60 ones 72 hundredths

       = 6072 hundredths

4. 3854

38.54 = 38   54  ____ 100   = 38 ones 54 hundredths 

   = 3854 hundredths

5. 9045

90.45 = 90   45  ____ 100   = 90 ones 45 hundredths

   = 9045 hundredths

2. 8195

81.95 = 81   95  ____ 100   = 81 ones 95 hundredths  

  = 8195 hundredths

P4 MATHS

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SAPMATP4_W47Page 5/5

Taken from Mental Mathematics Book 4

Do these sums mentally.

Do not reduce the answers to the lowest terms.

1. 89643+11726 =

2. 19×11 =

3. 6719÷3

4. 71323–51324 =

5. 42×48 =

6. 33×7.5 =

7. 17×17 =

8. 38×700 =

9. 3885÷7 =

10. 1__5 + 1___12 =

Solutions: 1. 101 369 2. 209 3. 2 4. 19 999 5. 2016 6. 247.5 7. 289 8. 26 600 9. 555 10.   17  ___ 60  

Mental Maths: GENERAL REVISION 10

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