Work through the levels in order. Type your answer and press Check — open the worked solution if you get stuck. Answers like -6, 3/4 or 0.25 are typed exactly as shown. A ⭐ Bonus Challenge at the end is extra credit — skip it if the rest was hard work.
Level 1 · Warm-up
1 Which is larger: 0.9 or 0.4?
Show worked solution
9 tenths beats 4 tenths, so 0.9.
2 Which is larger: 1.2 or 0.95?
Show worked solution
1.2 has a whole one and 0.95 does not, so 1.2 is larger.
3 Order smallest first: 0.5, 0.2, 0.9 (type like 0.2,0.5,0.9)
Show worked solution
0.2, 0.5, 0.9.
Level 2 · Core
4 Which is larger: 0.6 or 0.58?
Show worked solution
0.60 beats 0.58, so 0.6 is larger — even though it has fewer digits.
5 Order largest first: 0.71, 0.7, 0.17 (type like 0.71,0.7,0.17)
Show worked solution
0.71, 0.70, 0.17. Order: 0.71, 0.7, 0.17.
6 Write a decimal that sits between 0.4 and 0.5.
Show worked solution
Anything from 0.41 to 0.49 works, for example 0.45.
Level 3 · Challenge
7 Nina says 0.125 is bigger than 0.2 because 125 is bigger than 2. What is the correct larger number?
Show worked solution
0.125 has 1 tenth and 0.2 has 2 tenths, so 0.2 is larger. Nina compared the digits as if they were whole numbers.
8 Order smallest first: 1.05, 1.5, 1.15 (type like 1.05,1.15,1.5)
Show worked solution
1.05, 1.15 and 1.50. Order: 1.05, 1.15, 1.5.
9 Which is closer to 1: 0.89 or 1.2?
Show worked solution
1 − 0.89 = 0.11, and 1.2 − 1 = 0.2. Since 0.11 is the smaller gap, 0.89 is closer — being below 1 does not make it further away.