Fish in the sea
(1) Calculate, paying attention to the parentheses
| (49 + 10) + 10 = | (66 + 6) + 10 = | (81 + 10) + 6 = | 5 + (79 + 5) = |
| 10 + (40 + 18) = | 10 + (54 + 7) = | (36 + 18) + 9 = | 10 + (46 + 8) = |
(2) Calculate:
| 47 + = 65 | + 46 = 93 | 60 − = 26 | − 11 = 68 |
| 27 + = 80 | + 59 = 88 | 98 − = 37 | − 80 = 20 |
| 59 + = 95 | + 72 = 97 | 80 − = 33 | − 61 = 33 |
(3) Subtract and check by adding
| 80 − 30 = 50 | since 50 + 30 = 80 | 74 − 20 = | since + 20 = |
| 86 − 20 = | since + 20 = | 95 − 50 = | since + 50 = |
| 59 − 30 = | since + 30 = | 49 − 30 = | since + 30 = |
| 80 − 20 = | since + 20 = | 50 − 20 = | since + 20 = |
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Captain Popay went fishing. First, he caught 18 colorful fish in his net. A little later, while sailing past a coral reef, he caught another 10 blue fish.
(a) How many fish did Captain Popay catch in total? After that, while returning to the harbor, several seagulls circled above the boat. One seagull grabbed 10 fish from the net.(b) How many fish remained in Captain Popay's net? Finally, when he arrived at the harbor, his friend Richard gave him another 18 small, silver fish that he had caught himself.(c) How many fish does Captain Popay have in total now? (d) Additional question below the image (for those who want more) → |
 If Captain Popay decided to give half of all his fish to his cat named Liam, how many fish would Liam receive? |