Estimate using general rule 586-313.
Step 1 : Estimating values to nearest hundred
586to600313to300
Step 2 : Subtracting the values
600-300=300
Hence , estimate value is 300.
Estimate using general rule 640+892.
Estimate the product using general rule : 5381×3691
Estimate the product using general rule 1493×793
Estimate the product using general rule :8950×36
Estimate the following using the general rule :796-314