Use guess and check to solve the problem
用猜测和检验的方法解决问题
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?
杰克和苏珊在一家鞋店工作。上个星期,杰克比苏珊多卖6双鞋。他们两个共卖30双鞋。请问两人各卖多少双?
Jack ___________ pairs.
杰克 ___________ 双。
Susan ___________ pairs.
苏珊 ___________ 双。
(1) Underline what the problem asks.
(1) 将问题画底线。
(2) Check your answer.
(2) 检验答案是否正确。
(3) Complete the blank with right numbers.
(3) 在空格里填上正确的数字。
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 [ə'diʃən] n. 加法
Subtraction [səb'trækʃən] n. 减法
基本的数学加减算式的念法:
5+3=8 Five plus three equals eight.
9-5=4 Nine minus five equals four.
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