# Number Sense (IMO- Mathematics Olympiad Class 3): Questions 18 - 24 of 76

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## Question number: 18

» Number Sense

### Question

Madhuri wrote a number on the black board as shown below.

If it is formed from three different digits, then which of the following number could be placed in the gap to make it the biggest number?

### Choices

Choice (4) | Response | |
---|---|---|

a. | 0 | |

b. | 9 | |

c. | 5 | |

d. | 8 |

## Question number: 19

» Number Sense

### Question

The smallest five-digit number that can be formed using 9, 5, 4, 2, 8 without repeating the digits is ________.

### Choices

Choice (4) | Response | |
---|---|---|

a. | 45892 | |

b. | 24589 | |

c. | 85429 | |

d. | 52489 |

## Passage

Sonia is playing with some number cards. She made a deck of these cards and pulled the cards as shown below.

Her mother asked some question based on these cards. Help her to find the answers.

## Question number: 20 (1 of 3 Based on Passage) Show Passage

» Number Sense

### Question

Which is the smallest possible four digit number?

### Choices

Choice (4) | Response | |
---|---|---|

a. | 2568 | |

b. | 2586 | |

c. | 2856 | |

d. | 5628 |

## Question number: 21 (2 of 3 Based on Passage) Show Passage

» Number Sense

### Question

Which is the largest possible four-digit number?

### Choices

Choice (4) | Response | |
---|---|---|

a. | 9562 | |

b. | 8652 | |

c. | 9652 | |

d. | 8562 |

## Question number: 22 (3 of 3 Based on Passage) Show Passage

» Number Sense

### Question

The number lying between 500 and 600 which has 8 as tens digit that can be formed using the numbers on the cards is ________.

### Choices

Choice (4) | Response | |
---|---|---|

a. | 658 | |

b. | 568 | |

c. | 582 | |

d. | All of the above |

## Question number: 23

» Number Sense

### Question

Which symbol should be written in the box below to make the given number sentence true?

### Choices

Choice (4) | Response | |
---|---|---|

a. |
| |

b. | < | |

c. | = | |

d. | > |

## Question number: 24

» Number Sense

### Question

Which of the following pairs is incorrectly matched?

### Choices

Choice (4) | Response | |
---|---|---|

a. | One hundred fifty one- 151 | |

b. | Seven hundred twenty -720 | |

c. | Five hundred twenty two-522 | |

d. | Eight hundred twenty-822 |