Products of Fractions
Warm-up! Multiply:
1/2 and 1/3
What is 1/6 ?
Warm-up! What is
1/2 of 1/4?
What is 1/8 ?
Warm-up! When you multiply by a number less than 1, is the product usually smaller or larger than the other factor?
What is smaller?
Warm-up! How many 1/4 's in 3 wholes?
What is 12?
Warm-up! Which operation would you use to find 2/3 of 12?
What is multiplication?
Level up! Multiply:
2/3 and 3/5
What is 2/5 ?
Level up!
1/3 of 3/4
What is 1/4 ?
Level up! Without multiplying: compare ( 6 x 3/4 ) to 6.
What is lt 6?
Level up! How many 1/3 's in 2 wholes?
What is 6?
Level up! Three-fourths of 20 students chose soccer. How many students is that?
What is 15 students?
Think it through! Multiply:
3/4 and 2/5
What is 3/10 ?
Think it through! What is
2/3 of 3/5 ?
What is 2/5 ?
Think it through! Without multiplying: compare ( 8 x 5/4 ) to 8.
What is gt 8?
Think it through!
Solve: 1/3 div 4
What is 1/12 ?
Think it through! An equation for how many 1/5cup servings fit in 3 cups.
What is 3 ÷ 1/5 = 15?
Math detective! Multiply:
2 1/4 and 4/9
What is 1?
Math detective!
5/6 of 3/5
What is 1/2 ?
Math detective! Compare 4/3 and 5/6 with each of their reciprocals.
( 3/4 and 6/5 )
What is lt 4/3
but gt 5/6 ?
Math detective!
Solve: 3/4 div 5
What is 3/20 ?
Math detective! A 2 1/2cup container is filled using a 1/4cup scoop. How many scoops are needed?
What is 10 scoops?
Boss challenge! Multiply:
1 1/2 and 2/3
What is 1?
Boss challenge! How much of the whole is shaded if it represents 3/4 of 2/3 of a whole?
What is 1/2 of the whole?
Boss challenge! Without multiplying: compare 3/5 and 7/8 with each of their reciprocals.
( 5/3 and 8/7 )
What is less than both reciprocals?
Boss challenge!
Solve: 5 div 1/8 .
What is 40?
Boss challenge! Tell a quick story that matches 1/2 div 3
What is: half of an item shared equally among 3 people gives each person 1/6?