Page 3 - 2024 prim 4 SUMMERY_Neat
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Delta Modern Language Schools
Primary stage
Maths Department
Prim 4 2024-2025
Unit 1 : Digit , Numeral , number - Really Big numbers
You know that:
The digits are: 0 , 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9
The smallest 1-digit number = 0 The greatest 1-digit number = 9
The smallest 2-digit number = 10 The greatest 2-digit number = 99
The smallest 3-digit number = 100 The greatest 3-digit number = 999
The smallest 4-digit number = 1000 The greatest 4-digit number = 9 999
First: Million
• The smallest 7-digit number is million written as 1 000 000
• It is an even number because it is divisible by 2.
• The number just before it is the greatest 6-digit number 999 999
• Where 999 999 + 1 = 1000 000 (million)
Second: Milliard
• The smallest 10-digit number is 1000 000 000 writes as (milliard)
• It is an even number because it is divisible by 2.
• The number just before it is the greatest 9-digit number 999 999 999
• Where: 999 999 999 + 1 = 1 000 000 000 read as (milliard)
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