Fair shares, ordering and fact triangles
Answers are for parents and teachers.
1
Three cakes are shared equally among 6 children. Draw how you could cut the cakes. What fraction of a cake does each child get?
Cut each cake in half to make 6 halves. Each child gets 1/2 of a cake.
2
Order from least to greatest: 54,320; 5,432; 54,230; 45,320.
5,432 (4 digits) is the least. Then 45,320, then 54,230, then 54,320.
3
Write the four equations in the fact family of 4, 9 and 36.
4 × 9 = 36, 9 × 4 = 36, 36 ÷ 4 = 9 and 36 ÷ 9 = 4.
4
Seif says 614 + 289 = 893. Check by subtracting and find the correct sum.
893 − 289 = 604, not 614, so he is wrong. The correct sum is 903.
5
Use the digits 1, 0, 6, 8 and 3 once each. Make the greatest and the least 5-digit number.
Greatest: 86,310. Least: 10,368, since the number cannot start with 0.