Here are the solutions for the mental math problems, organized by day.
Monday
1.
240 ($60 \times 4 = 240$)
2.
70 ($630 \div 9 = 70$)
3.
508 ($254 + 254 = 508$)
4.
335 ($460 - 125 = 335$)
5.
150 m² (Area = $15 \times 10$)
6.
$\frac{1}{10}$ ($\frac{9}{10} - \frac{8}{10} = \frac{1}{10}$)
7.
16 ($4 \times 4 = 16$)
8.
0.45 m (Divide cm by 100 to get meters)
9.
3.2, 7.02, 7.22, 7.32 (Ordered from smallest to largest)
10.
$\times$ ($11 \times 11 = 121$)
Tuesday
1.
560 ($80 \times 7 = 560$)
2.
40 ($320 \div 8 = 40$)
3.
310 ($188 + 122 = 310$)
4.
511 ($635 - 124 = 511$)
5.
450 m² (Area = $9 \times 50$)
6.
$\frac{1}{3}$ ($\frac{2}{3} - \frac{1}{3} = \frac{1}{3}$)
7.
64 ($8 \times 8 = 64$)
8.
530 cm (Multiply meters by 100 to get cm)
9.
1.1, 0.11, 0.1, 0.01 (Ordered from largest to smallest)
10.
$+$ ($82 + 94 = 176$)
Wednesday
1.
270 ($30 \times 9 = 270$)
2.
100 ($900 \div 9 = 100$)
3.
571 ($361 + 210 = 571$)
4.
44 ($78 - 34 = 44$)
5.
460 m² (Area = $23 \times 20$)
6.
$\frac{1}{6}$ ($\frac{5}{6} - \frac{4}{6} = \frac{1}{6}$)
7.
81 ($9 \times 9 = 81$)
8.
6.32 m (Divide cm by 100 to get meters)
9.
3.03, 3.06, 3.3, 3.6 (Ordered from smallest to largest)
10.
$-$ ($42 - 18 = 24$)
Thursday
1.
400 ($40 \times 10 = 400$)
2.
40 ($160 \div 4 = 40$)
3.
178 ($99 + 79 = 178$)
4.
404 ($512 - 108 = 404$)
5.
110 m² (Area = $11 \times 10$)
6.
$\frac{1}{7}$ ($\frac{3}{7} - \frac{2}{7} = \frac{1}{7}$)
7.
121 ($11 \times 11 = 121$)
8.
45 cm (Multiply meters by 100 to get cm)
9.
2.51, 2.15, 2.1, 2.01 (Ordered from largest to smallest)
10.
$\div$ ($360 \div 6 = 60$)
Parent Tip: Review the logic above to help your child master the concept of grade 5 math worksheets.
