Here are the answers for the Mental Maths worksheet, broken down by day.
Monday
1.
34 (20 + 10 = 30, and 2 + 2 = 4)
2.
9 (18 - 8 = 10, then take away 1 more)
3.
118
4.
2 (There are 10 stars. 5 + 5 = 10, so that is 2 groups)
5.
118
6.
70 (The pattern is counting up by 5s)
7.
22 (11 + 11)
8.
55 (40 + 15)
9.
291
10.
30 (20 + 5 = 25, and 25 + 5 = 30)
Tuesday
1.
30 (19 + 1 = 20, plus 10 more is 30)
2.
24 (35 - 10 = 25, minus 1 more is 24)
3.
94
4.
2 (There are 4 stars. 2 + 2 = 4, so that is 2 groups)
5.
257
6.
120 (The pattern is counting up by 10s)
7.
30 (15 + 15)
8.
125 (110 + 10 = 120, plus 5 more is 125)
9.
818
10.
70 (50 + 15 = 65, and 65 + 5 = 70)
Wednesday
1.
33 (24 + 6 = 30, plus 3 more is 33)
2.
8 (15 - 5 = 10, minus 2 more is 8)
3.
211
4.
2 (There are 8 stars. 4 + 4 = 8, so that is 2 groups)
5.
98
6.
17 (The pattern is odd numbers counting up by 2s)
7.
50 (25 + 25)
8.
265 (250 + 10 = 260, plus 5 more is 265)
9.
511
10.
40 (27 + 3 = 30, and 30 + 10 = 40)
Thursday
1.
74 (63 + 10 = 73, plus 1 more is 74)
2.
31 (43 - 10 = 33, minus 2 more is 31)
3.
87
4.
2 (There are 6 stars. 3 + 3 = 6, so that is 2 groups)
5.
313
6.
93 (The pattern is counting down by 2s: 99, 97, 95...)
7.
24 (12 + 12)
8.
30 (15 + 15)
9.
222
10.
90 (73 + 7 = 80, and 80 + 10 = 90)
Parent Tip: Review the logic above to help your child master the concept of mental math worksheets.
