Use guess and check to solve the problem

用猜測和檢驗的方法解決問題

Jack and Susan work in a shoe store. Last week, Jack sold 6 more pairs of shoes than Susan did. Together they sold 30 pairs. How many pairs of shoes did each person sell?

杰克和蘇珊在一家鞋店工作。上個星期，杰克比蘇珊多賣6雙鞋。他們兩個共賣30雙鞋。請問兩人各賣多少雙？

Jack? ___________? pairs.

杰克? ___________? 雙。

Susan? ___________? pairs.

蘇珊? ___________? 雙。

(1) Underline what the problem asks.

(1) 將問題畫底線。

(2) Check your answer.

(2) 檢驗答案是否正確。

(3) Complete the blank with right numbers.

(3) 在空格里填上正確的數(shù)字。

答? 案

1. How many pairs of shoes did each person sell?

2. Clue 1: Jack’s Shoes + Susan’s Shoes = 30

Check: 18 + 12 = 30

Clue 2: Jack’s shoes Susan’s shoes = 6

Check: 18 – 12 = 6

3.18, 12

[注]

Addition? [?'di??n] n. 加法

Subtraction? [s?b'tr?k??n]? n. 減法

基本的數(shù)學(xué)加減算式的念法：

5+3=8? Five plus three equals eight.

9-5=4? Nine minus five equals four.

?

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