Benkyou Math: Grade 4

A Math app for kids. The app offers thousands of mathematical practice drills and is designed to build both accuracy and speed. Grade 1, 2, and 3 editions are also available.
Here is what is covered in the Grade 4 edition:

-Long division of 3-digit numbers by 2-digit numbers
-Decimals (addition, subtraction, and multiplication)
-Addition of up to 6-digit numbers
-Subtraction of up to 6-digit numbers.
-Multiplication of up to 4-digit numbers by four digits.
-Basic division, including remainders (2-digit divided by 1-digit)
-Times table drills (designed to be fun and build speed).
-Quick order drills (designed to improve the students’ ability to order numbers very rapidly, both whole and decimal numbers)
Features:
-NEW: Voice recognition multiplication drills!
-There are detailed solutions for each question. The solutions are delineated on virtual graph paper, and help students with understanding concepts such as carrying and borrowing.
-The app is customizable and students can change the background colours and icon themes to their personal preferences.
-The students’ results are tracked, so they can monitor their improvements over time.
-Students can choose to receive feedback after each question (practice mode), or receive feedback at the end of an exercise (test mode).
Base math skills is focused on accuracy and speed. This speed and accuracy is obtained by extensive practice, drills, and understanding of the core mathematical concepts. QuizCor created this app to give the opportunity for students to try their hand at the Grade 4 Japanese math curriculum.