Answer key · Set A
The two savers
124 Leo planted his sixteen coins after year two. In year three the garden added 8 coins: 16 + 8 = 24.
281 Fifty-four plus twenty-seven make eighty-one coins.
345 Eighty-one take away thirty-six leaves forty-five.
4False Each planted just sixteen coins. Mia started two years sooner.
52 more years Mia's coins grew for four years and Leo's for two, so Mia had two more years: 4 − 2 = 2.
6True The garden had the same rule for both: one new coin for every two.
7False Coins in a pouch do not grow in the garden. They have to be planted.
818 Twelve coins in pairs make 6 pairs, so 6 new coins come: 12 + 6 = 18.
91-B, 2-A, 3-D, 4-C Gran gave the coins, Mia planted at once, Leo waited two years, and the garden used the same rule for both.
102, 4, 3, 1 Gran gave the coins, Mia planted, Leo planted two years later, and in year four they counted 81 and 36.
11False Mia's coins grew for four years and Leo's for two. Mia planted two years sooner.
12Your own words: a grown-up reads it.
Mark each answer, count the right ones and write the score on the sheet.