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1.  Қызықты есептер

9x9+7=88

98x9+6=888

987x9+5=8888

9876x9+4=88888

98765x9+3=888888

987654x9+2=8888888

9876543x9+1=88888888

98765432x9+0=888888888

2. Cандар сыры

1х8+1=9

12х8+2=98

123х8+3=987

1234х8+4=9876

12345х8+5=98765

123456х8+6=987654

1234567х8+7=9876543

12345678х8+8=98765432

123456789х8+9=987654321

3. Құпия теңдіктер

9х1+2=11

9х12+3=111

9х123+4=1111

9х1234+5=11111

9х12345+6=111111

9х123456+7=1111111

9х1234567+8=11111111

9х12345678+9=111111111