help with variable?

Hackscribble:
It would be good also to tidy up the variable name.

"lastMillis" would be better called "startMillis".

problem sorted,......finally,
thank you so much!

int led1 = 4;
int led2= 5;
int led3 = 6;
int led4 = 7;
int led5 = 8;
int led6 = 9;
int led7 = 10;
int led8 = 11;
int led9 = 12;
int led10 = 13;
unsigned long lastMillis = 0;
unsigned long nowMillis = 1;
unsigned long Millis = 1;
void setup() { 
  Serial.begin(9600);
  lastMillis=millis();
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(led3, OUTPUT);
  pinMode(led4, OUTPUT);
  pinMode(led5, OUTPUT);
  pinMode(led6, OUTPUT);
  pinMode(led7, OUTPUT);
  pinMode(led8, OUTPUT);
  pinMode(led9, OUTPUT);
  pinMode(led10, OUTPUT);
}
void loop() {
  delay (1000);
  nowMillis = millis();
Serial.println((nowMillis - lastMillis) / 1000.0, 1);   // Forced to float to display decimal part of time, and set to 1 decimal place
  digitalWrite(led1, HIGH);
  delay(1000);
  nowMillis = millis();
Serial.println((nowMillis - lastMillis) / 1000.0, 1);   // Forced to float to display decimal part of time, and set to 1 decimal place
  digitalWrite(led2, HIGH);
  delay(1000);
  nowMillis = millis();
Serial.println((nowMillis - lastMillis) / 1000.0, 1);   // Forced to float to display decimal part of time, and set to 1 decimal place
  digitalWrite(led3, HIGH);
  delay(1000);
  nowMillis = millis();
Serial.println((nowMillis - lastMillis) / 1000.0, 1);   // Forced to float to display decimal part of time, and set to 1 decimal place
  digitalWrite(led4, HIGH);
  delay(1000);
  nowMillis = millis();
Serial.println((nowMillis - lastMillis) / 1000.0, 1);   // Forced to float to display decimal part of time, and set to 1 decimal place
  digitalWrite(led5, HIGH);
  delay(1000);
  nowMillis = millis();
Serial.println((nowMillis - lastMillis) / 1000.0, 1);   // Forced to float to display decimal part of time, and set to 1 decimal place
  digitalWrite(led6, HIGH);
  delay(1000);
 nowMillis = millis();
Serial.println((nowMillis - lastMillis) / 1000.0, 1);   // Forced to float to display decimal part of time, and set to 1 decimal place
  digitalWrite(led7, HIGH);
  delay(1000);
  nowMillis = millis();
Serial.println((nowMillis - lastMillis) / 1000.0, 1);   // Forced to float to display decimal part of time, and set to 1 decimal place
  digitalWrite(led8, HIGH);
  delay(1000);
  nowMillis = millis();
Serial.println((nowMillis - lastMillis) / 1000.0, 1);   // Forced to float to display decimal part of time, and set to 1 decimal place
  digitalWrite(led9, HIGH);
  delay(1000);
  nowMillis = millis();
Serial.println((nowMillis - lastMillis) / 1000.0, 1);   // Forced to float to display decimal part of time, and set to 1 decimal place
  digitalWrite(led10, HIGH);
  delay(1000);
  nowMillis = millis();
  Serial.println((nowMillis - lastMillis) / 1000.0, 1);   // Forced to float to display decimal part of time, and set to 1 decimal place
  digitalWrite(led1, LOW);
  delay(1000);
  nowMillis = millis();
Serial.println((nowMillis - lastMillis) / 1000.0, 1);   // Forced to float to display decimal part of time, and set to 1 decimal place
  digitalWrite(led2, LOW);
  delay(1000);
  nowMillis = millis();
Serial.println((nowMillis - lastMillis) / 1000.0, 1);   // Forced to float to display decimal part of time, and set to 1 decimal place
  digitalWrite(led3, LOW);
  delay(1000);
  nowMillis = millis();
Serial.println((nowMillis - lastMillis) / 1000.0, 1);   // Forced to float to display decimal part of time, and set to 1 decimal place
  digitalWrite(led4, LOW);
  delay(1000);
  nowMillis = millis();
Serial.println((nowMillis - lastMillis) / 1000.0, 1);   // Forced to float to display decimal part of time, and set to 1 decimal place
  digitalWrite(led5, LOW);
  delay(1000);
  nowMillis = millis();
Serial.println((nowMillis - lastMillis) / 1000.0, 1);   // Forced to float to display decimal part of time, and set to 1 decimal place
  digitalWrite(led6, LOW);
  delay(1000);
 nowMillis = millis();
Serial.println((nowMillis - lastMillis) / 1000.0, 1);   // Forced to float to display decimal part of time, and set to 1 decimal place
  digitalWrite(led7, LOW);
  delay(1000);
  nowMillis = millis();
Serial.println((nowMillis - lastMillis) / 1000.0, 1);   // Forced to float to display decimal part of time, and set to 1 decimal place
  digitalWrite(led8, LOW);
  delay(1000);
  nowMillis = millis();
Serial.println((nowMillis - lastMillis) / 1000.0, 1);   // Forced to float to display decimal part of time, and set to 1 decimal place
  digitalWrite(led9, LOW);
  delay(1000);
  nowMillis = millis();
Serial.println((nowMillis - lastMillis) / 1000.0, 1);   // Forced to float to display decimal part of time, and set to 1 decimal place
  digitalWrite(led10, LOW);
}