Multiply by Power of Ten

Which power of 10 will make this number sentence true?
0.4 x _____= 4

• 100

• 10

• 1,000

• 0

• 10

• 100

• 1,000

• 10,000

80.72 x 10³ =

• 80,720

• 8,072

• 807,200

• 807.20

10² x 4.78 =

• 4.78

• 47.8

• 478

• 4,780

987.674 x 10³ =

• 987,674

• 9,876.74

• 98.7674

• 0.987674

Moving the decimal point to the right it's correct when I'm _____________ a decimal by a power of 10

• summing

• resting

• multipliying

• dividing

• All up

Explain how to multiply a decimal by a power of 10

18,753.56436 x 1,000 = _________

• 18,753,564.36

• 18,753,564,360

• NO CORRECT ANWSER

• 1,875,356.436

Everytime I'm multiplying a power of 10 with a decimal I move the decimal point at the _______

72 × 10 ³

• 72000

• 720

• 7200

• 0.072