64. Arvuta.
13 + 2 =
15 + 1 =
14 + 3 =
13 + 6 =
18 + 1 =
16 + 2 =
14 + 4 =
11 + 7 =
11 + 3 =
13 + 5 =
12 + 4 =
12 + 5 =
65. Lahenda ülesanne.
![](https://astrablobs.blob.core.windows.net/kitcontent/3483a42f-c061-4f45-af6c-08f78cc9c2be/03d892ba-51a3-44fb-aea2-3657bb1ae36c/16cc6f93-12c7-46bd-9ddb-7f0ba7c1ebd9_m.png)
Trammis oli 16 inimest.
Peatuses sisenes trammi 3 inimest.
Mitu inimest on nüüd trammis?
67. Sobita joonis ja ülesanne.
Keera telefon laiupidi.
![](https://astrablobs.blob.core.windows.net/kitcontent/3483a42f-c061-4f45-af6c-08f78cc9c2be/37c49f17-d59a-4d8d-a3f8-e9c94a1065c6/e3eaaa7e-1abc-4468-954a-1283904d65fa_m.png)
Arvuta.
5 | + | 2 | = | |||||
1 | 5 | + | 2 | = | ||||
1 | 1 | + | 6 | = | ||||
1 | + | 6 | = |
68. Arvuta.
4 | + | 1 | = | |||
14 | + | 1 | = | |||
5 | + | 3 | = | |||
15 | + | 3 | = | |||
2 | + | 5 | = | |||
12 | + | 5 | = | |||
1 | + | 7 | = | |||
11 | + | 7 | = |
3 | + | 2 | = | |||
13 | + | 2 | = | |||
4 | + | 4 | = | |||
14 | + | 4 | = | |||
3 | + | 6 | = | |||
13 | + | 6 | = | |||
1 | + | 8 | = | |||
11 | + | 8 | = |
Jaota saadud vastused.
![](https://astrablobs.blob.core.windows.net/kitcontent/3483a42f-c061-4f45-af6c-08f78cc9c2be/d926daac-334f-4952-92ec-b42dc9bc0944/cfa95869-7cb5-4569-9acd-192dfc7160ef_m.png)
![](https://astrablobs.blob.core.windows.net/kitcontent/3483a42f-c061-4f45-af6c-08f78cc9c2be/78a969c5-481d-4383-b03e-bf3010c20864/88ef66c7-07c6-4403-b7e4-444056b7c066_m.png)
- 5
- 17
- 19
- 9
- 15
- 7
- 18
- 8
72. Vaata joonist. Arvuta.
![](https://astrablobs.blob.core.windows.net/kitcontent/3483a42f-c061-4f45-af6c-08f78cc9c2be/4c7d0812-4b16-4dcc-8fff-1e1ad34e474c/f0e3a52e-d7e6-4260-af13-460fb1dfa2a5_m.png)
11 + 3 =
![](https://astrablobs.blob.core.windows.net/kitcontent/3483a42f-c061-4f45-af6c-08f78cc9c2be/f75bf9e7-5c4d-48a5-bc11-2b7d568b38d6/edc84c55-90e4-448f-b299-7d648aee5bd3_m.png)
3 + 11 =
Miks need vastused on võrdsed?
Kumba ülesannet on lihtsam arvutada?
![]() | Lihtsam on suuremale arvule liita väiksem arv. |
74. Arvuta.
12 + 1 =
1 + 12 =
14 + 3 =
3 + 14 =
2 + 13 =
3 + 12 =
6 + 11 =
4 + 15 =
5 + 13 =
14 + 2 =
16 + 3 =
2 + 15 =
Liitmis-ülesandes nimetan arve nii: | ![]() |
13 | + | 2 | = | 15 |
esimene | teine |
|
76.Koosta ülesanne. Kirjuta summa.
Keera telefon laiupidi.
1. liidetav | 2. liidetav | Ülesanne | Summa |
11 | 7 | ||
5 | 12 | ||
3 | 15 | ||
16 | 3 |
77. Lahenda ülesanne.
![](https://astrablobs.blob.core.windows.net/kitcontent/3483a42f-c061-4f45-af6c-08f78cc9c2be/666ca54f-805d-4d5d-bf77-cb4d31422b8d/30315630-61d1-4702-a469-b3a4dba06dab_m.png)
Järvel oli 5 parti.
Hiljem lendas järvele veel 12 parti.
Mitu parti on nüüd järvel?