Balanced Equations
5+7=
12
12 + 27 =
12 rounds to 10
27 rounds to 30
10 + 30 = 40
In the fridge, there are 4 stacks of chocolate puddings, 7 stacks of brownies and 5 stacks of pasta salad. How many stacks of dessert are there?
16
13+25=
38
54-23=
31
9+6=
15
Estimate the difference
25 - 13 =
25 rounds to 30
13 rounds to 10
30 - 10 = 20
There were 42 glasses of juice. The guests at the party spilled 4 glasses of juice and drank 31 glasses of juice. How many glasses were left?
7
71+19=
90
49 - 15
34
65+10
75
Estimate the sum
34 + 28 =
34 rounds to 30
28 rounds to 30
30 + 30 = 60
The food bank expected to recruit 60 volunteers. 34 men and 45 women signed up. How many volunteers were recruited?
79
303
84-39=
45
25+8=
33
25-13=
12
103+272=
375
68 - 29 =
39
22+9=
31
53-10=
43
87 postcards and 76 parcels were received on Tuesday. In the morning, the mail truck took away 24 parcels. In the afternoon, the mail truck took away another 19 parcels. How many parcels are left to in the post office?
33
565+197=
762
54 - 36 =
18