Edit in JSFiddle

<script src="https://npmcdn.com/vue@2/dist/vue.js"></script>
<script src="https://npmcdn.com/vue-input-keyboard/dist/index.min.js"></script>

<div id="app">
<div>[HOME]</div>
<center>
    number:<inputkeyboard v-model="number" :decimals="2" placeholder="click to enter"/>
</center>
</div>
new Vue({
    el: '#app',
    data() {
        return {
            number: -12345,
        }
    },
    methods: {

    }
})