Comprehensive Grade 5 mental math worksheet featuring four days of practice problems covering multiplication, division, geometry, and decimals.

Let's solve the problems step by step for each day.

---

Monday

1. 60 × 4 =
\[
60 \times 4 = 240
\]

2. 630 ÷ 9 =
\[
630 \div 9 = 70
\]

3. 254 + 254 =
\[
254 + 254 = 508
\]

4. 460 - 125 =
\[
460 - 125 = 335
\]

5. What is the area of a shape that is 15m × 10m?
\[
\text{Area} = \text{length} \times \text{width} = 15 \times 10 = 150 \, \text{m}^2
\]

6. \(\frac{9}{10} - \frac{8}{10} =\)
\[
\frac{9}{10} - \frac{8}{10} = \frac{1}{10}
\]

7. \(4^2 =\)
\[
4^2 = 4 \times 4 = 16
\]

8. 45cm = \_\_\_\_ m
\[
45 \, \text{cm} = \frac{45}{100} \, \text{m} = 0.45 \, \text{m}
\]

9. Order the decimals in ascending order: 7.22, 7.02, 7.32, 3.2
\[
3.2, 7.02, 7.22, 7.32
\]

10. Fill in the missing operation: 11 \_\_\_\_ 11 = 121
\[
11 \times 11 = 121
\]

---

Tuesday

1. 80 × 7 =
\[
80 \times 7 = 560
\]

2. 320 ÷ 8 =
\[
320 \div 8 = 40
\]

3. 188 + 122 =
\[
188 + 122 = 310
\]

4. 635 - 124 =
\[
635 - 124 = 511
\]

5. What is the area of a shape that is 9m × 50m?
\[
\text{Area} = 9 \times 50 = 450 \, \text{m}^2
\]

6. \(\frac{2}{3} - \frac{1}{3} =\)
\[
\frac{2}{3} - \frac{1}{3} = \frac{1}{3}
\]

7. \(8^2 =\)
\[
8^2 = 8 \times 8 = 64
\]

8. 5.3m = \_\_\_\_ cm
\[
5.3 \, \text{m} = 5.3 \times 100 \, \text{cm} = 530 \, \text{cm}
\]

9. Order the decimals in descending order: 0.1, 0.11, 0.01, 1.1
\[
1.1, 0.1, 0.11, 0.01
\]

10. Fill in the missing operation: 82 \_\_\_\_ 94 = 176
\[
82 + 94 = 176
\]

---

Wednesday

1. 30 × 9 =
\[
30 \times 9 = 270
\]

2. 900 ÷ 9 =
\[
900 \div 9 = 100
\]

3. 361 + 210 =
\[
361 + 210 = 571
\]

4. 78 - 34 =
\[
78 - 34 = 44
\]

5. What is the area of a shape that is 23m × 20m?
\[
\text{Area} = 23 \times 20 = 460 \, \text{m}^2
\]

6. \(\frac{5}{6} - \frac{4}{6} =\)
\[
\frac{5}{6} - \frac{4}{6} = \frac{1}{6}
\]

7. \(9^2 =\)
\[
9^2 = 9 \times 9 = 81
\]

8. 632cm = \_\_\_\_ m
\[
632 \, \text{cm} = \frac{632}{100} \, \text{m} = 6.32 \, \text{m}
\]

9. Order the decimals in ascending order: 3.06, 3.6, 3.3, 3.03
\[
3.03, 3.06, 3.3, 3.6
\]

10. Fill in the missing operation: 42 \_\_\_\_ 18 = 24
\[
42 - 18 = 24
\]

---

Thursday

1. 40 × 10 =
\[
40 \times 10 = 400
\]

2. 160 ÷ 4 =
\[
160 \div 4 = 40
\]

3. 99 + 79 =
\[
99 + 79 = 178
\]

4. 512 - 108 =
\[
512 - 108 = 404
\]

5. What is the area of a shape that is 11m × 10m?
\[
\text{Area} = 11 \times 10 = 110 \, \text{m}^2
\]

6. \(\frac{3}{7} - \frac{2}{7} =\)
\[
\frac{3}{7} - \frac{2}{7} = \frac{1}{7}
\]

7. \(11^2 =\)
\[
11^2 = 11 \times 11 = 121
\]

8. 0.45m = \_\_\_\_ cm
\[
0.45 \, \text{m} = 0.45 \times 100 \, \text{cm} = 45 \, \text{cm}
\]

9. Order the decimals in descending order: 2.15, 2.51, 2.1, 2.01
\[
2.51, 2.15, 2.1, 2.01
\]

10. Fill in the missing operation: 360 \_\_\_\_ 6 = 60
\[
360 \div 6 = 60
\]

---

Final Answers

\[
\boxed{
\begin{array}{ll}
\text{Monday:} & 240, 70, 508, 335, 150, \frac{1}{10}, 16, 0.45, 3.2, 7.02, 7.22, 7.32, \times \\
\text{Tuesday:} & 560, 40, 310, 511, 450, \frac{1}{3}, 64, 530, 1.1, 0.1, 0.11, 0.01, + \\
\text{Wednesday:} & 270, 100, 571, 44, 460, \frac{1}{6}, 81, 6.32, 3.03, 3.06, 3.3, 3.6, - \\
\text{Thursday:} & 400, 40, 178, 404, 110, \frac{1}{7}, 121, 45, 2.51, 2.15, 2.1, 2.01, \div \\
\end{array}
}
\]