Fish in the sea
(1) Calculate, paying attention to the parentheses
| (44 + 4) + 10 = | (60 + 5) + 9 = | (90 + 9) + 9 = | 9 + (74 + 5) = |
| 5 + (36 + 14) = | 10 + (55 + 5) = | (31 + 18) + 6 = | 9 + (49 + 8) = |
(2) Calculate:
| 44 + = 69 | + 48 = 93 | 60 − = 20 | − 29 = 64 |
| 29 + = 80 | + 50 = 88 | 94 − = 31 | − 70 = 30 |
| 51 + = 90 | + 78 = 98 | 73 − = 32 | − 65 = 37 |
(3) Subtract and check by adding
| 93 − 20 = 73 | since 73 + 20 = 93 | 72 − 30 = | since + 30 = |
| 83 − 20 = | since + 20 = | 90 − 30 = | since + 30 = |
| 60 − 20 = | since + 20 = | 43 − 30 = | since + 30 = |
| 70 − 30 = | since + 30 = | 74 − 30 = | since + 30 = |
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Captain Steve went fishing. First, he caught 18 colorful fish in his net. A little later, while sailing past a coral reef, he caught another 4 blue fish.
(a) How many fish did Captain Steve 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 Steve's net? Finally, when he arrived at the harbor, his friend Grace gave him another 14 small, silver fish that he had caught himself.(c) How many fish does Captain Steve have in total now? (d) Additional question below the image (for those who want more) → |
 If Captain Steve decided to give half of all his fish to his cat named Archie, how many fish would Archie receive? |
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