Question Answered
Time Elapsed
Smart Score
Estimate the sum. Use benchmarks with decimal parts of 0, 0.25, 0.50, or 0.75.
0.97 + 1.24
Estimate the difference. Use benchmarks with decimal parts of 0, 0.25, 0.50, or 0.75.
4.49 - 1.23
Estimate the difference. Use benchmarks with decimal parts of 0, 0.25, 0.50, or 0.75.
2.29 – 2.02
Estimate the sum. Use benchmarks with decimal parts of 0, 0.25, 0.50, or 0.75.
1.73 + 7.23
Estimate the sum. Use benchmarks with decimal parts of 0, 0.25, 0.50, or 0.75.
4.73 + 5.01
Estimate the sum. Use benchmarks with decimal parts of 0, 0.25, 0.50, or 0.75.
0.77+8.01
Estimate the difference. Use benchmarks with decimal parts of 0, 0.25, 0.50, or 0.75.
8.91–7.99
Estimate the difference. Use benchmarks with decimal parts of 0, 0.25, 0.50, or 0.75.
7.55 - 7.03
Estimate the difference. Use benchmarks with decimal parts of 0, 0.25, 0.50, or 0.75.
5.45 - 4.54
Estimate the sum. Use benchmarks with decimal parts of 0, 0.25, 0.50, or 0.75.
3.21 + 5.98