[tex]\sf \: 1. \: 0.3 - 0.18 = {\boxed{\boxed{\sf\blue{0.12}}}}[/tex]
[tex]\sf \: 2. \: 0.4 - 0.27 = {\boxed{\boxed{\sf\blue{0.13}}}}[/tex]
[tex]\sf3. \: 0.74 - 0.397 = {\boxed{\boxed{\sf\blue{0.343}}}}[/tex]
[tex]\sf \: 4. \: 0.8 - 0.36 = {\boxed{\boxed{\sf\blue{0.44}}}}[/tex]
[tex]\sf \: 5. \: 0.4 - 0.187 = {\boxed{\boxed{\sf\blue{0.213}}}}[/tex]
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