diff --git a/1-hello_world/Cargo.toml b/01-hello_world/Cargo.toml similarity index 100% rename from 1-hello_world/Cargo.toml rename to 01-hello_world/Cargo.toml diff --git a/1-hello_world/src/main.rs b/01-hello_world/src/main.rs similarity index 100% rename from 1-hello_world/src/main.rs rename to 01-hello_world/src/main.rs diff --git a/2-guessing_game/Cargo.toml b/02-guessing_game/Cargo.toml similarity index 100% rename from 2-guessing_game/Cargo.toml rename to 02-guessing_game/Cargo.toml diff --git a/2-guessing_game/src/main.rs b/02-guessing_game/src/main.rs similarity index 100% rename from 2-guessing_game/src/main.rs rename to 02-guessing_game/src/main.rs diff --git a/3-variables/Cargo.toml b/03-variables/Cargo.toml similarity index 100% rename from 3-variables/Cargo.toml rename to 03-variables/Cargo.toml diff --git a/3-variables/src/main.rs b/03-variables/src/main.rs similarity index 100% rename from 3-variables/src/main.rs rename to 03-variables/src/main.rs diff --git a/4-data_types/Cargo.toml b/04-data_types/Cargo.toml similarity index 100% rename from 4-data_types/Cargo.toml rename to 04-data_types/Cargo.toml diff --git a/4-data_types/src/main.rs b/04-data_types/src/main.rs similarity index 100% rename from 4-data_types/src/main.rs rename to 04-data_types/src/main.rs diff --git a/5-functions/Cargo.toml b/05-functions/Cargo.toml similarity index 100% rename from 5-functions/Cargo.toml rename to 05-functions/Cargo.toml diff --git a/5-functions/src/main.rs b/05-functions/src/main.rs similarity index 100% rename from 5-functions/src/main.rs rename to 05-functions/src/main.rs diff --git a/6-control_flow/Cargo.toml b/06-control_flow/Cargo.toml similarity index 100% rename from 6-control_flow/Cargo.toml rename to 06-control_flow/Cargo.toml diff --git a/6-control_flow/src/main.rs b/06-control_flow/src/main.rs similarity index 100% rename from 6-control_flow/src/main.rs rename to 06-control_flow/src/main.rs diff --git a/7-temperature_convertion/Cargo.toml b/07-temperature_convertion/Cargo.toml similarity index 100% rename from 7-temperature_convertion/Cargo.toml rename to 07-temperature_convertion/Cargo.toml diff --git a/7-temperature_convertion/src/main.rs b/07-temperature_convertion/src/main.rs similarity index 100% rename from 7-temperature_convertion/src/main.rs rename to 07-temperature_convertion/src/main.rs diff --git a/8-fibonacci/Cargo.toml b/08-fibonacci/Cargo.toml similarity index 100% rename from 8-fibonacci/Cargo.toml rename to 08-fibonacci/Cargo.toml diff --git a/8-fibonacci/src/main.rs b/08-fibonacci/src/main.rs similarity index 100% rename from 8-fibonacci/src/main.rs rename to 08-fibonacci/src/main.rs diff --git a/9-prime_numbers/Cargo.toml b/09-prime_numbers/Cargo.toml similarity index 100% rename from 9-prime_numbers/Cargo.toml rename to 09-prime_numbers/Cargo.toml diff --git a/9-prime_numbers/src/main.rs b/09-prime_numbers/src/main.rs similarity index 100% rename from 9-prime_numbers/src/main.rs rename to 09-prime_numbers/src/main.rs