Multiplying 7 × 30 is the fact 7 × 3 with the zero put back. Each sheet has twelve bare problems with a line after the equals sign, and your child writes the product. Building Confidence multiplies a single digit by whole tens, On Level adds hundreds, and Challenge Me multiplies tens by tens and single digits by thousands.
What your child will learn
Multiply a number by a multiple of 10, 100 or 1,000
Use a basic fact and count the zeros
Check that the product has the right number of zeros
Common Core standard: 4.NBT.B.5
Worked example
7 × 30 = 210, because 7 × 3 = 21 and 30 has one zero.
Common mistake
Dropping a zero, or adding the zeros of both factors twice.
Helpful hint
Multiply the digits that are not zeros, then write all the zeros after the answer.