using number lines

Use the Number Line DLO to help solve these problems.

Make sure to round UP to the nearest 10 before adding the rest,

Question	Working Out	Answer
27 + 16 =		43
35 + 19 =		54
48 + 23 =		71
56 + 14 =		70
27 + 26 =		53
68 + 15 =		83
93 + 48 =		141

Can you solve these problems without using the DLO?

Question	Working Out	Answer
35 + 18 =	35 + 5 = 40 + 13 = 53	35 + 18 = 53
26 + 25 =	26+20=46+5=51	26+25=51
39 + 14 =	39+4=43+10=53	39+14=53
57 + 24 =	57+20=77+4=81	57+24=81
49 + 13 =	49+10=59+3=62	49+13=62
38 + 24 =	38+20=58+4=62	38+24=62