A jeweler needs exactly 19,000 beads to make jewelry. He buys 48 boxes of beads. Each box has 400 beads. He completes the calculations below and concludes that he has bought enough boxes of beads to make all of the jewelry.

Question

48 x 400 = (40 x 400 ) + (8 x 400 )
= 16,000 + 3,200
= 19,200

Which explains what the jeweler does to support his conclusion?

The jeweler does a calculation to find the number of beads he buy and compares the amount to 19,000.

The jeweler does a calculation to find the number of beads he needs and compares the amount to 19,000.

The jeweler estimates the total number of beads he buys and compares the amount to 19,000.

The jeweler estimates and the total number of beads he needs and compares the amount to 19,000.

Answer 1

The appropriate explanation for what the jeweler does to support his conclusion is:

The jeweler does a calculation to find the number of beads he buys and compares the amount to 19,000.

This is because the jeweler specifically computes the total number of beads purchased (which is 19,200) and compares it directly to the number of beads needed (19,000) to conclude that he has enough beads.