JP3064068U - Mental arithmetic solo bang - Google Patents

Abstract

(57) [Summary] Fix the girder of the digit you want to practice with Mental Calculation of Soloban, and do not fix the girder of the rising digit. Do not fix the sixth digit from the right in a 10-digit solovan, but fix the other digits. By doing the repetitive practice, you can get the image of adjustment. PROBLEM TO BE SOLVED: To imagine a real solo ban when calculating adjustments in mental arithmetic practice. SOLUTION: By using a 10-digit solo ban, the sixth digit from the right is not fixed, and the other digits are fixed, so that the carry-up number is put in the sixth non-fixed digit. 1
In the case of a digit, two-digit, or three-digit mental arithmetic practice, the problem can be solved by performing calculations while imagining a number with a fixed digit, and putting the number to be carried into the sixth digit which is not fixed. In order to make the image of Soloban easy to fix, the length of the girder between the five beads and the beam and the length of the girder between the one bead and the beam can be shortened with a bead to be fixed. The beads are easier to see.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a special abacus for soloban practice in mental arithmetic.

[0002]

[Problems to be solved by the invention]

 When calculating sums and differences in Mental arithmetic practice of Soloban, image the real Solobang. In that case, it is difficult to remember the numbers that are carried forward. It is easier to understand using a real solo van to image.

[0003]

[Means for solving the invention]

 Use a 10-digit solo ban, and do not fix the 6th digit from the right. By reducing the length of the girder between Soroban's five beads and the beam and the length of the girder between one bead and the beam, a real solobang can be imaged.

[0004]

[Embodiment of the invention]

 Make a 10-digit solobang using real solovan beads, beams and girders. By attaching a white board on the back, the beads are easy to see. In Fig. 1, fix the right 5 digits and do not fix the 6 digits. The 7th to 10th digits are fixed.

[0005] Fig. 2 shows a fixed bead where the length 1 of the girder between the five beads and the beam is 2 mm. The length 2 of the girder between the bead and the beam is 2 mm.

FIG. 3 shows an unfixed bead in which the length 3 of the girder between the bead and the beam is 4 mm. The length 3 of the girder between the bead and the beam is 4 mm. In Fig. 2 and Fig. 3, the color is changed only for Fig. 3 of the unfixed girder.

[0007]

[Effect of the Invention] In the case of one-digit, two-digit, and three-digit mental arithmetic, it is not necessary to remember the carry-up number. If you fully memorize the three digits of apparent mental arithmetic, you can perform four or more digits of apparent mental arithmetic and reading mental arithmetic, and you can perform one or more digits of multiplying and darkening arithmetic.

[0008]

[Brief description of the drawings]

 1, 2 and 3 are plan views.

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[Procedure amendment]

[Submission date] June 11, 1999

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Claims for utility model registration

[Correction method] Change

[Correction contents]

[Utility model registration claims]

Claims (1)

[Utility model registration claims] 1. Fix the girder of the girder you want to practice with Mental Calculation of Soloban, and do not fix the girder of the rising girder. Do not fix the sixth digit from the right in a 10-digit solovan, but fix the other digits. Reduce the length of the girder between Soroban's five beads and beams. At the same time, reduce the length of the girder between the bead and the beam.