【正文】
any pins does Fran have in her collection? Keisha收集了 213枚徽章。 Fran收集的徽章比 Keisha多 78枚。 Fran收集了多少枚徽章? Keisha Fran 當(dāng)比較量增多后,用模型作圖法更直觀,學(xué)生更易找到解題思路。 The total mass of a basket,4 large pebbles,and 2 small pebbles is 7/12 Kg. The total mass of a basket,2 large pebbles,and 1 small pebbles is 5/12 Kg. Find the mass of the empty basket. 一個筐子, 4塊大鵝卵石和 2塊小鵝卵石共重 7/12千克。 一個筐子, 2塊大鵝卵石和 1塊小鵝卵石共重 5/12千克。 一個空筐子重多少千克? The total mass of a basket,4 large pebbles,and 2 small pebbles is 7/12 Kg. The total mass of a basket,2 large pebbles,and 1 small pebbles is 5/12 Kg. Find the mass of the empty basket. 一個筐子, 4塊大鵝卵石和 2塊小鵝卵石共重 7/12千克。 一個筐子, 2塊大鵝卵石和 1塊小鵝卵石