WORK OUT #3

Mathematics for Children
Mental Computation and Number Sense Exercises
 

Recommended for Age 8-9

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Latihan matematik ini disarankan untuk digunakan oleh murid-murid sekolah rendah berumur 8 hingga 9 tahun. Semua latihan adalah menggunakan ayat bahasa Inggeris. Latihan-latihan matematik ini mengetengahkan konsep mental computation. Laman ini boleh dicetak terus untuk kegunaan guru sebagai salah satu aktiviti dalam kelas.
 

  1. For each of these, complete the sentence then write the answer.
 

Double 130

is the same as

double _____ plus double _____

130 + 30 = _____
 

Double 160

is the same as

 double _____ plus double _____

160 + 160 = _____
 

Double 143

is the same as

double _____ plus double _____

 

143 + 143 = _____
 

Double 182

is the same as

double _____ plus double _____

 

182 + 182 = _____
 
 

  1. Draw the arrow from each of these to its answer below.
 a.

double 110

b.

double 83

c.

double 115

d.

double 141
 

230

  

220

  
282

  
166
 
 

  1. Double each of these. Write the number sentence.
a.

65

  _____ + _____ = ______
b.

122

  _____ + _____ = ______
c.

155

  _____ + _____ = ______
d.

204

  _____ + _____ = ______
 

  1. Write two other  doubles you know.

a.

Double _____ = _____

b.

  Double _____ = _____
 
 

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