1 1 2 3 4 5 0 Nối theo mẫu 1 + 4 2 + 3 5 + 1 0 + 0 3 + 1 4 + 1 3+2 5 + 0 1 + 5 2 + 2 2 + 0 2 + 3 0 + 5 1 + 4 1 + 1 2 + 1 5 + 0 4 + 0 2 Tính 1 + 2 + 3 + 1 + 4 + + = + = + = + = + = 2 1 0 2 0 0 0 2 1 1 1 + + = 0 3 1 + 2 + 2 + 1 + 3 + + = + = + = + = + = 2 3 0 0 1 2 0 2 1 0 0 + + = 0 2 1 + + = 4 0 1 + + = 0 4 3 Số 1 + 2 + 3 + 1 + 1 + + = 3 + = + = + = + = 2 3 0 2 1 0 + + =0 1 + 2 + + 1 + 0 + + = + = + = + = + = 2 0 2 2 1 0 0 + + = 1 4 5 3 5 2 3 1 + + = 0 1 + + = 4 5 ? 4 5 4 3 5 1 4 Số 4 = 2 = 3 = 4 = 4 = + + + + + + + + + + 2 1 0 3 0 2 0 2 0 2 5 = + + 0 2 2 = + + 0 0 ? 4 = 3 = 5 = 4 = 4 = + + + + + + + + + + 0 1 3 1 3 0 1 0 1 1 5 = + + 0 5 1 = + + 0 1 5 2 + 0 + 2 3 + 1 + 1 2 + 0 + 1 1 + 3 + 1 4 + 1 + 0 3 + 0 + 2 3 + 1 + 0 1 + 2 + 2 2 + 1 + 2 3 + 1 + 1 3 + 0 + 0 1 + 3 + 0 1 + 1 + 1 1 + 2 + 1 6 > < = 2 + 2 + 1 5 3 + 1 + 1 4 0 + 4 + 1 3 5 + 0 + 0 4 1 + 3 + 1 5 2 + 1 + 1 4 0 + 4 1 + 3 0 + 4 + 1 2 + 3 3 2 + 1 + 1 2 + 2 2 + 3 0 + 2 + 1 0 + 3 2 + 1 1 + 1 3 + 0 0 + 2 + 3 4 2 + 0 + 3 2 + 1 1 + 3 2 + 2 + 1 0 + 3 + 1 Thực hiện phép tính 2 + 1 + 1 = 2 + 1 + 1 = 2 + + 1 = 3 3 + 0 + 1 = 0 + 1 + 2 = 4 + 1 + = 5 1 + 4 + 1 = 3 + 0 + 2 = + 1 + 1 = 4 1 + 3 + 0 = 1 + 2 + 2 = 0 + 2 + = 4 0 + 2 + 2 = 4 + 0 + 1 = 3 + + 1 = 5 2 + 0 + 3 = 1 + 0 + 4 = 1 + + 1 = 3 3 + 1 + 0 = 2 + 0 + 2 = 0 + 3 + = 5 4 + 0 + 1 = 1 + 1 + 3 = 0 + + 1 = 1 0 + 5 + 0 = 2 + 0 + 1 = 2 + 1 + = 5 1 + 3 + 1 = 1 + 0 + 2 = 3 + + 0 = 3 7 8 3 + 2 = 2 + 5 + 0 = 0 + 1 + 4 = 4 + 3 + < 5 3 + = 5 4 + > 4 3 + > 4 + 4 = 5 + 0 < 5 + 3 > 5 3 + > 4 + 0 1 + > 4 + 0 0 + = 3 + 2 + 4 3 + 2 = Điền số thích hợp vào ô trống + 2 > 3 + 1 + 3 = 2 + + 1 = 3 + + 2 > 1 + + 0 = 2 + + 2 = 4 + + 2 < 1 + 2 3 + 1 + + < > 4 + . + 0 1 3 1 3 0 1 0 1 1 5 = + + 0 5 1 = + + 0 1 5 2 + 0 + 2 3 + 1 + 1 2 + 0 + 1 1 + 3 + 1 4 + 1 + 0 3 + 0 + 2 3 + 1 + 0 1 + 2 + 2 2 + 1 + 2 3 + 1 + 1 3 + 0 + 0 1 + 3 + 0 1 + 1 + 1 1 + 2 + 1 6 > < = 2. 2 + 1 5 3 + 1 + 1 4 0 + 4 + 1 3 5 + 0 + 0 4 1 + 3 + 1 5 2 + 1 + 1 4 0 + 4 1 + 3 0 + 4 + 1 2 + 3 3 2 + 1 + 1 2 + 2 2 + 3 0 + 2 + 1 0 + 3 2 + 1 1 + 1 3 + 0 0 + 2 + 3 4 2 + 0 + 3 2 + 1 1 + 3 2. + 1 1 + 3 2 + 2 + 1 0 + 3 + 1 Thực hiện phép tính 2 + 1 + 1 = 2 + 1 + 1 = 2 + + 1 = 3 3 + 0 + 1 = 0 + 1 + 2 = 4 + 1 + = 5 1 + 4 + 1 = 3 + 0 + 2 = + 1 + 1 = 4 1 + 3 + 0 = 1 + 2 + 2 = 0 + 2 +