front 1 place value | back 1 A system that gives a digit a value based on its position in a number |
front 2 If you move a digit to the left, _______________ | back 2 it increases by 10x the amount |
front 3 If you move a digit to the right, _______________ | back 3 it is now 10x smaller |
front 4 expanded form | back 4 a way to write a number as the sum of the values of each digit (example: 4,198 in expanded form is 4,000 + 100 + 90 + 8) |
front 5 standard notation or standard form | back 5 the most common way of writing numbers (just digits) |
front 6 exponent | back 6 A number used to tell how many times to multiply a base number by itself (example: 103 is also 10 x 10 x 10, which equals 1,000) (3 is the exponent) (example: 82 is also 8 x 8, which equals 64) (2 is the exponent) |
front 7 base | back 7 The number that is multiplied based on the exponent (example: 103 is also 10 x 10 x 10, which equals 1,000) (10 is the base) (example: 82 is also 8 x 8, which equals 64) (8 is the base) |
front 8 power of 10 | back 8 a number that can be written as a product of 10s (example: 104 can be rewritten as 10 x 10 x 10 x 10, which equals 10,000) (we say this "10 to the power of 4") |
front 9 extended multiplication fact | back 9 Variations of multiplication facts that involve multiplies of 10, 100, and so on (example: an extended multiplication fact would be 50 x 3 or 300 x 5, instead of 3 x 5) |
front 10 estimate | back 10 an answer close to the exact answer |
front 11 partial products multiplication | back 11 a way to get the product of a multiplication problem by breaking the problem up into smaller chunks and adding them together |
front 12 area model multiplication | back 12 a way to get the product of a multiplication problem by treating the numbers in the problem like the length and width of a rectangle |
front 13 measurement unit | back 13 the unit used when measuring something in weight, length, volume, capacity, temperature, or speed (examples: inches, centimeters, feet, pounds, ounces, hours, seconds) |
front 14 algorithm | back 14 step-by-step instructions for how to solve a problem (example: the algorithm for finding the area of a rectangle is to multiply length times width) |
front 15 efficient | back 15 to do something easily and quickly |
front 16 dividend | back 16 the number in a division problem that is being divided (example: in the problem 35 ÷ 7 = 5, the dividend is 35) |
front 17 divisor | back 17 the number in a division problem that divides another number (example: in the problem 35 ÷ 7 = 5, the divisor is 7) |
front 18 quotient | back 18 the answer to a division problem (example: in the problem 35 ÷ 7 = 5, the quotient is 5) |
front 19 remainder | back 19 an amount left over when one number is divided by another number (example: if 38 books are divided into 5 equal piles, there will be 7 books in each pile with 3 books left over. The remainder is 3, and the answer can be written as 38 ÷ 5 = 7 R 3 |
front 20 partial quotients division | back 20 a way to divide a number in which the dividend is divided by smaller divisors first, then added together |