Students use the sign rules to find 16 products and quotients, predict signs before computing, and write equations for three real-life situations.
Only the colour PDF is ready for this resource so far. The other formats are on the way.
Last updated
Page 1 sets out the sign rules for multiplying and dividing integers, including how to count negatives when there are more than two factors, with worked examples such as (−6)(4)(−2) = 48. Students find eight products and eight quotients, including zero cases and (−1)(−2)(−3)(−4). On page 2 they predict signs before computing, write equations for a temperature drop, a descending elevator and account debits, and find two integers with a product of −24 and a sum of 5. The key shows how many negatives sit behind each sign.
Sign Detective c, −120 ÷ (−8) ÷ (−3), catches students who see two divisions by negatives and call it positive. Count the negatives including the −120: three, so the answer is −5, as the key shows.
Items 4 and 12, (−13)(0) and 0 ÷ (−9), are both 0. Students often write −13 or −9, or mix item 12 up with dividing by zero; point to the zero rule on the sign card.
In situation 18 the elevator goes down, so the answer is −14 each second, not 14. Ask students what the minus sign means in each real-life answer before they write it.
Ways to adjust the 23 numbered items and the challenge.
Each one is checked against the official document. Where the resource covers only part of a standard, the note says so.
Students multiply and divide positive and negative integers, predict the sign of a product or quotient, find missing integers and write equations for three real-life situations; adding and subtracting integers and working with fractions or decimals are not covered.
Only in the challenge, which asks for a sum. Every other item is multiplication or division.
Used it in class? Your notes help another teacher plan.
